Glacial Erratic - Forest Loop Trail

Glacial Erratic on the Forest Loop Trail

NPS Photo

This huge rock looks out of place in this forest. That's because it is! The rock came from up the bay and rode piggyback on the glacier to this point. When the ice receded it abandoned the rock, which is why it is called a "glacial erratic." Notice the lichen and moss growing on the rock, starting the process of breaking down the rock into soil.