The famous rock formations and potholes on this hike, located in Interstate Park, are the result of a cast ice field 5,000 feet thick and the size of the state of Minnesota melting and flowing with an incredible current. Giant eddies swirled silt and rocks into the rock in a scouring motion that drilled holes as large as twenty feet in diameter and sixty feet in depth. This route explores these glacial potholes and wanders through the intricate topography of Lake O’ the Dalles before heading to a quiet waterfall.