Another small hydrothermal explosion at Biscuit Basin in Yellowstone National Park

The USGS Volcanoes X/Twitter account posted this on Monday. The post includes a video of the explosion:

In the early morning hours of June 13, 2026, a small hydrothermal explosion occurred at Biscuit Basin in Yellowstone National Park! The activity was recorded by a camera and other monitoring equipment and resulted in major changes to the landscape. Today’s Caldera Chronicles blows open the story!

https://usgs.gov/observatories/yvo/news/oops-it-did-it-again-another-small-hydrothermal-explosion-biscuit-basin

▶️Explosion took place at 5:09 a.m. MDT on June 13, 2026

▶️The event was captured by a remote camera, as well as seismic and infrasound monitoring instruments installed nearby

▶️The location was the barren area just north of Black Diamond Pool (that pool was the site of a larger hydrothermal explosion on July 23, 2024)

▶️Three new vent areas opened, including an 18.5-meter (61-foot) fissure filled with boiling water

▶️Rocks were thrown a few meters (yards), indicating the explosive energy was much lower than that of the 2024 event

▶️High levels of water discharge from the vents entrained sediment and drained into the Firehole River, creating milky streaks in the river that persisted far downstream

▶️About 2 or 3 days later, a circular collapse featured formed in the area of the explosion and filled with near-boiling water

▶️On June 18, geyser-like spouting about 6-9 meters (20-30 feet) high was observed from the new circular pool

▶️Yellowstone Volcano Observatory scientists deployed new monitoring equipment in the basin last week to track the evolving nature of the activity

Biscuit Basin remains closed to visitors.

Roughly two years ago, a more powerful explosion occurred in nearly the same spot:





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Check out our online trail guides:

• Glacier National Park: HikinginGlacier.com

• Grand Teton National Park: TetonHikingTrails.com

• Rocky Mountain National Park: RockyMountainHikingTrails.com

• Ramble On: A History of Hiking

Going-to-the-Sun Road Now Open for the 2026 Season

The Going-to-the-Sun Road is now fully open for the 2026 season. Visitors will be able to drive the entire 50-mile length of the road, and access Logan Pass from both West Glacier and St. Mary Entrances.

Vehicles and vehicle combinations longer than 21 feet (including bumpers) or wider than 8 feet (including mirrors) are prohibited between Avalanche Creek and Rising Sun. Vehicles over 10 feet in height may have difficulty driving west from Logan Pass to The Loop due to rock overhangs. Stock trucks and trailers can access Packers Roost on the west and Siyeh Bend on the east.

At Logan Pass, visitors will discover lingering winter snow, and should be prepared for cold temperatures, wind, and icy conditions. Standing or walking on snow along the road and nearby trails is strongly discouraged.

The Highline Trail from Logan Pass is closed due to snow conditions. Be sure to check the Trail Status Reports page often for the latest information on trail conditions.

Visitors are encouraged to be prepared at the entrance station by having their Park Pass ready and accessible.

Park only in designated parking spaces throughout the park. Parking outside of marked areas damages fragile vegetation, contributes to soil erosion, and can block access for emergency responders. To help protect park resources and ensure safe travel for all, visitors should follow posted parking guidance, avoid stopping along roadways, and remain patient during periods of high congestion.

As a reminder, do not throw food waste, including apple cores, orange peels, sunflower seeds, unwanted drinks (coffee, tea, soda) etc., out car windows. This attracts wildlife to the roadways which increases wildlife fatalities. Discard garbage in bear-proof garbage cans.

Traffic into the West Entrance of the park may be busy at times. Visitors may expect waits of up to 2 miles and 30 minutes to West Glacier at peak times.



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Check out our online trail guides:

• Glacier National Park: HikinginGlacier.com

• Grand Teton National Park: TetonHikingTrails.com

• Rocky Mountain National Park: RockyMountainHikingTrails.com

• Ramble On: A History of Hiking

Forest Service Proposes First National Policy for Recreational Climbing on Public Lands

The U.S. Forest Service will publish a proposed climbing directive in the Federal Register and initiate a 30-day public comment period. This proposal establishes the agency’s first national direction for managing recreational climbing opportunities on national forests and grasslands that will include guidance for the use and maintenance of fixed anchors and equipment.

The updated proposal replaces a 2023 draft that was overtaken by new requirements in the Expanding Public Lands Outdoor Recreation Experiences (EXPLORE) Act, signed into law January 4, 2025. The EXPLORE Act directs federal land management agencies to recognize recreational climbing - including certain fixed anchors – as an appropriate use in congressionally designated wilderness areas.

“Recreational climbing continues to grow in popularity, with nearly 30 percent of all outdoor climbing occurring on National Forest System lands,” said Forest Service Chief Tom Schultz. “This proposed directive provides much-needed national policy for climbing activities and gives local decision-makers the ability to work with partners, tribes, climbing organizations, and others to ensure visitors are having safe, responsible and accessible outdoor experiences.”

By law, the Forest Service must develop a climbing directive, consistent with the goals stated Executive Order 14219, “Ensuring Lawful Governance and Implementing the President’s ‘Department of Government Efficiency’ Deregulatory Initiative.” (PDF, 162 KB)

The outdoor recreation economy continues to grow, and the Forest Service is committed to promoting and increasing access to these special sites. Nationally, it is estimated there are nearly 10.3 million climbers in the United States, of which approximately 2.3 million participated in sport or boulder climbing and approximately 2.4 million participated in traditional ice or mountaineering climbing, according to the Outdoor Industry Association’s 2022 report on outdoor participation trends.

The proposed rule can be viewed and comments submitted through the Comment and Analysis Response Application.



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From Montana to New Mexico, the American Rockies stretch for more than a thousand miles. Within this spectacular mountain range are thousands of miles of hiking trails. With such an overwhelming number of options, how will you find and choose the most scenic and rewarding hikes?

Ultimate Hiking Guide to the Rocky Mountains takes all the guesswork out by focusing on some of the most amazing hikes across this range, and provides you with a handpicked list of options that will allow you to make the most of your trips in the Rockies:

Fire danger raised to high

Teton Interagency Fire managers have elevated the fire danger rating to “high” for Grand Teton National Park, the Bridger-Teton National Forest, and the National Elk Refuge.

While the landscape may still appear green, heavy dead and down timber and fuels are what drive fire activity. A high fire danger means wildfires can start easily and spread quickly. Fire managers consider things like fuel moisture (how dry grasses, shrubs, and trees are), forecasted temperatures and wind, how fast fires can grow, and whether firefighting resources are available nationwide.

For the latest fire updates, safety tips, and current restrictions, visit TetonFires.com.

To report smoke or a fire, call the Teton Interagency Fire Dispatch Center at 307-739-3630.



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Rising more than 7000 feet above Jackson Hole, the majestic mountains of Grand Teton National Park provide one of the most dramatic landscapes in the world. With more than 240 miles of trails meandering throughout this park, how will you find and choose the most scenic and rewarding hikes?

Exploring Grand Teton National Park takes all the guesswork out by focusing on the most amazing hikes, and provides you with handpicked recommendations that will allow you to make the most of your trip to Grand Teton:

Going-to-the-Sun Road Projected to Open Monday, June 22

The full length of Going-to-the-Sun Road is expected to open to motorized vehicles on Monday, June 22, for the 2026 summer season. Rockfalls or other natural events may delay this opening, as conditions can change quickly.

Glacier National Park is reminding visitors about important changes taking effect for the 2026 season. These changes, first announced in February, include that the park will not have vehicle reservations in 2026, will introduce three-hour parking limits at Logan Pass, and will replace the Going-to-the-Sun Road Shuttle service with a ticketed Logan Pass Shuttle for hikers of the Highline Trail and visitors who want a longer stay at Logan Pass.

Both the Logan Pass Shuttle system and the three-hour timed parking at Logan Pass will begin on July 1, 2026.

Complete information on the Logan Pass Shuttle and the limited three-hour parking at Logan Pass can be found online at Visiting Logan Pass in 2026.

Visitor information services and the Glacier National Park Conservancy bookstore will be available at the Logan Pass Visitor Center starting June 22. Visitors are reminded to pack water and snacks as food and water are not available for purchase at the Logan Pass Visitor Center. There is a water bottle filling station and restrooms will be open.

Parking at Avalanche, Apgar Village, and other areas may be congested or temporarily unavailable.



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Glacier National Park preserves more than a million acres of some of the most spectacular scenery on Earth. With more than 740 miles of trails meandering throughout this vast park, how will you find and choose the most scenic and rewarding hikes?

Exploring Glacier National Park takes all the guesswork out by focusing on the most amazing hikes, and provides you with handpicked recommendations that will allow you to make the most of your trip to Glacier: