Ellefsen Harbour

Ellefsen Harbour (60°44′S 45°3′W) is a harbour lying at the south end of Powell Island between Christoffersen Island and Michelsen Island, in the South Orkney Islands. It was discovered in the course of a joint cruise by Captain George Powell, a British sealer, and Captain Nathaniel Palmer, an American sealer, in December 1821. The name first appeared on Powell's chart published in 1822.