2015 Map of Little Glass Mountain

About this map

Klamath National Forest, Shasta National Forest, and Modoc National Forest converge in this high-elevation volcanic landscape of Siskiyou County. The area is defined by massive obsidian and lava formations, most notably the Little Glass Mountain and the expansive Crater Glass Flow to the northeast. Geologic activity is recorded in the varied craters and vents that dot the terrain, from Paint Pot Crater to the massive Giant Crater in the south. An old Railroad Grade cuts through the northern timberline, hinting at the region's logging history within the heavy forest cover. Human markers are sparse but significant, including the site of Old Camp One and water sources like Harris Spr, which were essential for early forest navigation and industry. The map captures a complex topography of cinder cones and lava flows, including the Tilted Rock Lava Flow, providing a detailed view of these unique volcanic features.