jonathanirish: “ Yup, there’s actually a log through which you can drive in Sequoia National Park. Called Tunnel Log, it’s located on the way up to Moro Rock. Driving through a tree is such a novelty that it can be a busy place most anytime of the.
The mountain-like mounds that we associate with volcanoes are what remain after the material spewed during eruptions has collected and hardened around the vent. This can happen over a period of weeks or many millions of years.