Snow in July.

Lassen Volcanic National Park.

Like Yellowstone, Lassen is a bubbling center of volcanic activity. My dad and I climbed to the top of Lassen Peak, a volcano that last erupted in 1915. The highest point was around 10,500 feet. Surprisingly, I could breathe up there. In September, I'd like to hike up farther in Rocky Mountain National Park, in search of serenity, awe and challenge. Hopefully, a good friend will accompany me.