This child group collects Glaciers of North America members located in the lower forty-eight states, principally on the volcanic and non-volcanic peaks of the Cascade Range in Washington, Oregon and California, and on ranges of the Rocky Mountains in Montana, Wyoming and Colorado, including named glaciers within Glacier National Park, Mount Rainier National Park and other protected areas. These are generally smaller, lower-elevation glaciers than their Alaskan or Canadian counterparts, several of them well documented for their retreat, and they remain the group most accessible to visitors and researchers alike.