Pull over to the side of the road and get a photo of the 30-ton boulder named Hot Rock. During one of Lassen's big eruptions, this giant lava boulder ejected out of the magma chamber and flew down the mountain in a rock avalanche to its final resting place here--five miles away!
A few days later, local photographer B.F. Loomis snapped a picture of the rock. Because it was still steaming and hot to the touch, he named it Hot Rock. You can see Loomis' historic photograph of Hot Rock in the Loomis Museum.
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