Pluto's Cave is a cool underground lava tube located near Mount Shasta. It's like a natural cave system that was formed by flowing lava thousands of years ago. People can explore the cave and see all the cool rock formations and tunnels inside. Just make sure to bring a flashlight and wear sturdy shoes, because it can get pretty dark and rocky in there!

Pet-friendly: No, dogs are not permitted in the caves

Soft adventure: More of a moderate challenge

Seasonality: Technically all seasons, but the roads often close during the winter.

Fee: Free