Spring plowing has begun and most roads are closed to all vehicles until mid-April. The road between the North and Northeast entrances remains open and is open year-round to regular vehicles. More
Biscuit Basin Closed Due to Hydrothermal Explosion
The parking lot and boardwalk at Biscuit Basin, located north of Old Faithful, is closed until further notice due to the possibility of another event at the site of a hydrothermal explosion that occurred July 23, 2024. More
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Grizzly bears sometimes vocalize when agitated or nervous. These sounds of huffing, jaw-popping (heard at :35 and :57 seconds in), and low growls are warnings that you're too close. If you hear them while you're out in the park, back away calmly (never run), leave the immediate area, and give the bear more space. You must stay at least 100 yards/91 meters away from bears (about the length of a football field). And just a reminder, we recommend that everyone hike in groups of three or more, make lots of noise while hiking, and carry bear spray.
These sounds were recorded with a cell phone by an experienced Bear Management Technician, Dan Bergum, during recent fieldwork involving capture. The bear was recorded during the few moments that it was contained inside a large, culvert-sized trap. Rest assured, no bears, scientists, or mobile devices were harmed while recording!
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During the spring thaw, bison sometimes get stuck and drown in the newly melted-out Blacktail Pond. Late one night in March 2015, a grizzly bear guarded and fed on a bison carcass there. This is a recording of the grizzly eating: snapping bones and all.
During the spring thaw, bison sometimes get stuck and drown in the newly melted-out Blacktail Pond. Late one night in March 2015, a grizzly bear guarded and fed on a bison carcass there. This is a recording of the grizzly eating: snapping bones and all.
