Much of today’s magnificent scenery in Rocky Mountain National Park is attributable to the erosional effects glaciers. This course will begin at the terminal moraine of an ancient glacier near a Park entrance station and traverse up Old Fall River Road through its U-shaped canyon, into its cirque eight miles away. We will observe depositional and erosional features along the way. On the return trip along Trail Ridge Road, many interesting glacial and periglacial features will be pointed out at several stops (rock glaciers, felsenmeer, patterned ground, ridge top spreading, solifluction, and earth hummocks). Participants will locate and offload real time temperature measurements as part of a research project examining permafrost and freeze-thaw patterns.