Shackleton Glacier
Lockhart Ridge () is a conspicuous ridge in Antarctica. About long, it extends west along the south side of Yeats Glacier and terminates at Shackleton Glacier. The ridge was named by the Texas Tech Shackleton Glacier Expedition (1964–65) for CWO James J. Lockhart, a pilot with the U.S. Army Aviation Detachment which supported the expedition.