South Table Mountain

South Table Mountain is a mesa on the eastern flank of the Front Range of the Rocky Mountains of North America. Castle Rock, the 6338ft summit of the mesa, is located on private property 0.9km directly east (bearing 90°) of downtown Golden, Colorado, United States, in Jefferson County.MesaThe most distinctive feature of the mesa is its nearly flat cap that is formed by ancient Paleocene lava flows. It is separated from companion North Table Mountain, which consists of the same geologic formation, by Clear Creek.South Table Mountain is a popular scenic and recreational destination in the Denver metro area, and most of it is preserved as Jefferson County Open Space. Its landmark prominence is Castle Rock, a small higher butte that projects from the mesa's northwest end.GeologySouth Table Mountain is underlain by sedimentary rocks of the Denver Formation, which spans the interval from latest Cretaceous to early Paleocene time. An exposure of the Cretaceous-Paleogene boundary layer has been identified and documented on its slopes.