Lake Lenore Caves State Park occupies Lenore Canyon, where basalt hills rise from the lake shore in a landscape shaped by the immense Missoula floods. Part of the Ice Age Floods National Geologic Trail, it is known for rock shelter caves formed when floodwaters undercut the canyon walls, the same forces that carved the Channeled Scablands and helped shape Lake Lenore. The park’s stark volcanic terrain of scoured stone and overhanging recesses is also tied to human history, with evidence that Native Americans used these shelters and left some petroglyphs. The site is significant for combining dramatic Ice Age geology with traces of later human presence.