Climber Self-Registration Begins September 11th

Where did the summer go? With the return of fall, operations and services at Mount Rainier will begin to decrease. Climbing Permits are still required through the fall and winter for traveling on Mount Rainier above 10,000 feet or on glaciers. Self-registration for climbers in Paradise begins Monday September 8th, 2025 and the Paradise Wilderness Information Center will close September 7th. There will be a self-registration box located outside the Old Ranger Station in Paradise. As winter approaches a large tunnel will be put in front of the door of the Old Station to keep the Self-Reg kiosk and stairs snow-free. Walk through this tunnel and find the self-registration box with instructions at the end of the walkway. This is open 24/7 for registration, even if no one is staffing it - follow the directions on the kiosk.

Self Registration is at the Paradise Ranger Station near the center of the photo.

Climbers can still register in-person (which we recommend) in Longmire and White River Ranger Stations. Check the park's operating hours and pay special attention to the date at which the operating hours change as we move into winter. The White River Wilderness Information Center will be staffed until October 9th, 2023. After that date, there will be a self-registration box on the outside of the Wilderness Information Center as well until the road closes for the season. The Longmire Wilderness Information Center will also close around then and move their operations to the Longmire Museum for the winter. 

There are two things required to climb in the off-season. The first is to pay the online Annual Climber Cost Recovery Fee. The second is to use the self-registration stations at Paradise or White River to fill out your permit. 

Filling out your self-registration permit completely will help any necessary search and rescue efforts - please take the time to get it right! The full list of instructions will be located at both self-registration stations. You will fill out a sheet (front and back) at the ranger station and leave it in the drop box, you don't carry the permit on you. Please remember when you get off the mountain to fill out the return slip at the station and put in the drop box as well to check out from the field. 

As summer turns to winter, our seasonal staff starts to migrate away from the mountain. High camps will only be staffed very occasionally, search and rescue operations will be delayed, and the park's exclusive-use SAR helicopter will be departing the park by late September. Please keep in mind that during the winters, there aren't rangers actively staffing the high camps to talk about conditions or weather. It is recommended that climbers are prepared to be very self-sufficient as any rescue efforts could take days! 

Disappointment Cleaver 9/8/2025

Welcome to September! 

As we move further into late summer season, conditions on the mountain have been rapidly transitioning from the snowfield to the summit.  Here's a quick run down on what's going on right now and into the winter on the mountain:

Muir Snowfield:

As stated in the previous blogpost, all parties headed up the Muir Snowfield should be prepared for sections of bare-ice, flowing water, and crevasses large enough to fall into. Please be ready with traction devices for footwear such as micro-spikes or crampons, trekking poles, and gloves. These icy and crevassed sections can catch people off guard if not properly prepared.  Be especially cautious if we get a fresh dusting of snow which can hide these hazards from view.  

Camp Muir:

Remember that the Public Shelter at Camp Muir remains closed through September, and all climbing parties will need to bring their own tent/shelter.   This makes conservative decision making during stormy weather important - there's no backup shelter to retreat to during lightning storms.   

Significantly sized crevasses have opened up in camp and continue to grow with warm temperatures.  This makes finding a campsite at Camp Muir difficult.  Please plan on camping on the snow, double check that your site doesn't have crevasses underneath and isn't prone to rockfall, and bring a shovel or adze to flatten out the tent site.  The crevasses near Camp Muir are now large enough a person can certainly fall in.

Please travel around camp with caution - there's been active rockfall on the ridges around camp and the danger of an unroped crevasse fall cannot be overstated.  

Disappointment Cleaver Route:

The upper mountain swiftly moves into "late season" conditions with significant crevasse, serac fall, and rockfall hazard throughout the route. 

All three guide services AAI, RMI and IMG have officially ceased guiding operations for the season, citing deteriorating conditions at the Cleaver entrance and upper route as the primary factors for this decision.  They've pulled all of the route adjuncts - no more ladders, hand lines or "fixed-pickets" are in place right now.  This means that any independent climbers must be prepared to navigate around large crevasse openings and prepared to protect steeper loose rock steps.  

The entrance on to the Cleaver has been the primary limiting factor for both guided parties and independent parties alike due to significant objective hazard. A widening moat between the Cleaver and Ingraham Glacier at 11,400 feet coupled with excessive rockfall and poor footing poses a risk decision that climbing parties must assess for themselves. 

Above the Cleaver, conditions have also continued to degrade without regular maintenance provided by the guide services. Independent teams should plan to navigate without relying on previously installed equipment and be prepared for complex route-finding and rapidly evolving hazards.  There will not be wands on the route marking a way to the summit.  

Late-season climbers should exercise heightened caution, assess conditions carefully, and have technical skills necessary for a truly independent and an unguided route. Good teamwork and conservative decision making are paramount for a successful trip on Mount Rainier. 

Dissapointment Cleaver 8/26/25

Muir Snowfield

Above Pebble Creek, the snowfield has many sections of ice exposed, flowing water, and small crevasses that are widening each day. Whether you are day-hiking to Muir or pushing for the summit, we recommend being prepared with traction devices such as micro-spikes or crampons to help increase your security when traveling on these firm and slick surfaces. 

Disappointment Cleaver

The general flow of the route is consistent with what it has been for the past few weeks. Some adjuncts have been removed (there is no longer a ladder at High Crack 11,400ft), and various ones have been added. Warm temperatures this past week have continued to change the upper mountain, and climbers should be prepared to manage hazards and conditions, including but not limited to:

+Rock and Ice fall

+Cravasse Fall

+Weakening Snow Bridges

+Glacial Ice

+Moats

+Navigational Challenges

+Changing Weather and Poor Visibility

A Path to the Summit on 8/26

There are numerous snow bridges that the route crosses on the Cowlitz as teams head up towards the gap. As always, when traveling on glaciers, it is highly recommended that parties stay roped up. 

The moat getting onto and off the cleaver right now poses some challenges as the glacier melts away from the rock, leaving thin snow/ice bridges and the overhead hazard of rockfall coming from the bowling alley above. Parties are encouraged to travel expeditedly when traversing towards the Cleaver to limit the time they are exposed to the rock and seracs above. 

Looking down on the moat from the Cleaver. *The black tongue of ice (center) was 3-6" thick when this photo was taken on 8/26

Looking up from the top of the Cleaver 12,400' (Taken 8/26)

Above the Cleaver, there are numerous Ladders, Planks, Fixed Pickets, and Handlines.  The guide services work hard to place and maintain these elements of the route on the DC. The National Park Service does not maintain these adjuncts. Parties are encouraged to inspect these items before they walk across them or clip their rope team to them. Consider hammering in fixed pickets that may have melted out and/or placing your own protection. 

A plank bridging a cravasse at ~12,500' (Taken 8/26)

Taken at ~12,550' on 8/26

Ladder at ~12,600' (Taken 8/26)

Taken at 12,700' on 8/26

The above zone at ~12,700' has some of the more notable overhead hazard exposure on the route currently. Be attentive to where your team stops along the route and avoid spending more time than necessary in these zones. 

Ladder and Snowbridge at 12,600' (Taken 8/26). *Many parties are opting to use the snowbridge on the downhill side of this double ladder. 

Photo showing surface conditions above ~13,400ft (Taken 8/26)

Remember that the Public Shelter at Camp Muir remains closed through September, and all climbing parties will need to bring their own tent/shelter.   

Muir Snowfield Conditions 8/22/25

 The Approach to Camp Muir is snow free until Pebble Creek. While you are enjoying the wildflowers, and wildlife please stay on the trail to minimize impact on our sensitive meadows.

Above Pebble Creek, the snowfield has sections of ice exposed, flowing water, and small crevasses that are widening each day. Whether you are day-hiking to Muir or pushing for the summit, we recommend being prepared with traction devices such as micro-spikes or crampons to help increase your security when traveling on these firm and slick surfaces. 

Looking up from 7,600ft (taken 8/21).

@ 9,150ft (taken 8/21)

@ 9,150ft (taken 8/21)

Crevasses @ 9,450ft (taken 8/21)

Crevasse with a weak snow bridge @ 9,450ft (taken 8/21)

The iciest sections of the snowfield are currently above ~8,600ft. In general, staying climbers right when ascending have the most favorable conditions and some parties have opted to gain the rock for better traction. 

As always, please take good note of conditions while you are ascending and make a plan for how you want to descend. 

Disappointment Cleaver 8/17/25

As we transition into the late-summer climbing season, the conditions on the Mountain are becoming more dynamic and the Disappointment Cleaver Route is changing daily, from the Muir Snowfield to the summit.

A strong weather system moved through Mount Rainier National Park starting 8/14 and lasted through 8/16. This brought close to 3" of water at Paradise, snow above 12,000' and extreme winds. The mountain has been experiencing continued strong winds with low lying clouds throughout the last few days. Looking at the extended forecast we may see a return to seasonally warm temperatures by the end of the week. 

Snow on the Cleaver 8/17/25

The storm brought an unknown amount of snow to the upper mountain - with this change the guide-maintained route is no longer established. Wands exist throughout but as of 8/18/25 - there is no beaten in route above the cleaver. Guide teams are working to reestablish their route. A team summited on 8/18, with a few others reaching various elevations around 13,000' since. The bulk of changes to the DC route have occurred above the Cleaver itself, for an in-depth update on the route from Paradise to the Cleaver - reference the last blog post. 

Several Inches new snow around 13000' - 8/17/25

The change in conditions has by no means rendered the DC route unclimbable, however it introduces more considerations when thinking about a summit attempt. Firm conditions exist above the Cleaver with new snow obscuring some of the surface expression making identifying crevasses potentially more challenging. Two ladders exist on route currently, one at high crack and one around 12,400' after the traverse from the top of the Cleaver. 

A ladder on the traverse from the Cleaver to the Emmons Shoulder - 8/17/25

Three ways to consider mountain hazards apart from weather are:

• Falling into the mountain: As always, crevasse hazard is present on the mountain. Climbers will encounter a few ladders throughout the route as it exists right now. Above the Cleaver, parties should anticipate a multitude of crossings and implement appropriate risk management strategies.
• Falling off the mountain: With the most recent storm, snow surfaces above the cleaver have become smooth, firm and more planar. The potential of taking a long sliding fall is a real risk with climbing conditions as they are above the cleaver. Appropriate protection and competent movement skills is paramount.
• The mountain falling on you: Climbing rangers noted increased rockfall through the bowling alley, potentially due to increased moisture from the recent storm combined with freeze thaw. Stay alert to any amount of overhead hazard and choose break locations to limit exposure.

Climbers traverse back towards the Cleaver 8/17/25

The Approach

The approach is snow-free from Paradise to Pebble Creek, with abundant wildlife, wildflowers, and free-flowing water. The Muir Snowfield has some sections of bare ice and flowing water, which may pose a hazard in cool temperatures when the surface freezes and becomes slippery. Be prepared to use crampons or micro spikes if freezing levels are forecasted to be around 10,000 ft.  Cracks are beginning to emerge on the snowfield with patches of ice becoming exposed. Keep eyes open and follow an appropriate route.

New crevasses are opening up left and right at Camp Muir, so use caution when setting up your tent and remember that once you step off of the rocks at camp you are on the Cowlitz Glacier. Consider probing your campsite and use careful footing when traveling from camp to your tent, especially at the interface between rock and ice where hidden cracks exist. 

Crevasses at Camp Muir 8/9/25

Other Considerations

The public shelter remains closed for renovations with the emergency radio now residing in the bathroom closest to the Helipad. As the climbing season moves into the latter part of August rangers have seen a wide array of preparedness on the mountain. A small daypack - or no pack at all is likely not enough gear to safely climb Mount Rainier. Additionally, not wearing helmets while climbing is ill advised. 

Disappointment Cleaver Route Update 8/12/2025

 Overview

As we transition into the late-summer climbing season, the conditions on the Mountain are becoming more dynamic and the Disappointment Cleaver Route is changing daily, from the Muir Snowfield to the summit. 

A steady period of high pressure ended with precipitation on Wednesday, 8/6, bringing low amounts of snowfall to the upper mountain and heavy rain from Camp Muir and below. This was followed by increasingly warm and dry conditions, with the freezing level hovering well above the summit at 16,500’. 

Moving into the second week of August, temperatures are forecasted to drop, along with an increased chance of precipitation. These unstable weather conditions will occur more frequently as the region transitions into autumn. During this dynamic part of the climbing season, the main hazards include: 

• Rapidly changing weather conditions

• Crevasse falls due to changing snow surface conditions

• Overhead rock and ice fall

Approaching Ingraham Flats with Disappointment Cleaver in the background on 8/9/25

Disappointment Cleaver Route

The approach is snow-free from Paradise to Pebble Creek, with abundant wildlife, wildflowers, and free-flowing water. The Muir Snowfield has some sections of bare ice and flowing water, which may pose a hazard in cool temperatures when the surface freezes and becomes slippery. Be prepared to use crampons or micro spikes if freezing levels are forecasted to be well below 10,000 ft. 

New crevasses are opening up left and right at Camp Muir, so use caution when setting up your tent and remember that once you step off of the rocks at camp you are on the Cowlitz Glacier. Consider probing your campsite and use careful footing when traveling from camp to your tent, especially at the interface between rock and ice where hidden cracks exist. 

Crevasses opening up at Camp Muir.

An unlucky climber punched a leg into this crevasse unintentionally on 8/9/25.

The same location as the photo above, just two days later, had increased in size and appeared to be 15' deep on 8/11/25.

The Cowlitz Glacier crossing has more crevasses opening up along the route, so use the appropriate rope length spacing when ascending and descending this section. We’ve seen several parties traveling very close together when descending after a long climb, but don’t get complacent on the descent when snow conditions are likely the warmest and bridges are weakest. 

Dunn’s Roll, just past Cathedral Gap, is an area of active rockfall and potentially confusing navigation, especially when traveling in the dark. Look for wands and avoid lingering anywhere that rock debris is strewn across the route. 

A clear, starry night at Camp Muir. Headlamps can be seen scattered across the Cowlitz Glacier and Cathedral Gap (8/9/25).

On the Ingraham Glacier, the High Crack ladder is still in place, followed by several snow-bridge crossings. Move quickly through the Ice Box and Bowling Alley, especially if parties are traveling on the upper Disappointment Cleaver when your party is below them. Strategically plan your breaks/rests by choosing areas with less overhead hazard and account for traffic along the route. 

The Disappointment Cleaver itself remains unchanged: use careful footing to avoid kicking rocks on parties below you and keep your rope up off the ground by shortening the rope interval between climbers.

From the top of the Cleaver, looking right at the "new" traverse (8/9/25).

The route has recently experienced the most change above the Disappointment Cleaver. From the top of the Cleaver, there is a new traverse to the north/climber’s right onto the Emmons shoulder. Look for wands and fresh boot-prints traveling up and right around 12,500 ft, immediately above the cleaver. The “old route” went directly up from the Cleaver and should be blocked with wands in an ‘X’, but note that these wands often fall over or become less visible. The traverse maintains a consistent elevation, and at roughly 12,600’, there is a double ladder set up at a ~25° angle. There is a snow plug just downhill from the ladder that is also a crossing option at the time of writing this update. Several fixed pickets exist around the ladder for protection.

The guiding services maintain the route and this equipment but it is available for public use; be respectful of this equipment and any guides you encounter on the route and in camp. They did a lot of hard work this week to get the new route variation in place, so thank them if you get the chance!

8/9/2025 Route Track

Looking up at the double ladder. Approx. 12,600'. The snow plug can be seen on the right hand side of the photo (8/9/25).

Looking down on the double ladder at 12,600 ft on 8/9/25.

From the ladder, the route travels up and then begins to switch back before the final ascending traverse to the crater rim (see photo of track). Again, keep a heads up on the descent for rapidly changing snow or weather conditions, assess every crevasse crossing and consider using techniques like belaying to get your party through terrain. Be safe, have fun, and we look forward to seeing you all out on the Mountain.

A climber traverses back to the top of the Cleaver on 8/9/25.

Additional Information 

More information on climbing on Mt. Rainier can be found on the Mt. Rainier National Park Climbing Page. Here, you will find information about how to pay the Annual Climbing Fee, obtain a Climbing Permit, and make reservations. The Paradise Wilderness Information Center (PWIC) is open daily from 07:30-17:00.

Looking south from Camp Muir under full moonlight during the early morning hours of 8/11/25.