Craig Pass Closed for the Season; Mammoth to Norris Closed Sept. 14-30
The road linking West Thumb and Old Faithful is closed for the season—traffic should detour through West Thumb, Lake, and Canyon. The road from Mammoth to Norris is closed for two weeks—traffic should detour over Dunraven Pass. More »
Tracking the Hot Spot
Moving in a southwesterly direction at the rate of one inch (2.5 cm) per year, the North American continental plate has passed over a shallow chamber of partially molten rock, leaving behind a trail of volcano tracks.
Over the course of 16.5 million years, approximately 15-20 massive eruptions have left immense calderas (craters) to dot the landscape from the Nevada-Oregon border through Idaho’s Snake River Plain to Yellowstone National Park. Eventually the movement of the plate brought the Yellowstone area into contact with the shallow body of magma and the stage was set for more volcanic fireworks!
Did You Know?
Lake trout are an invasive species of fish that is decimating the native cutthroat trout population in Yellowstone Lake.