The Baker Channel is a large, multi-armed fjord that cuts from Tarn Bay in the Gulf of Penas some 75 miles into the Chilean mainland. It lies roughly halfway between the Northern and Southern Patagonian Ice Fields, and its southern arm culminates at the face of the Jorge Montt Glacier, which flows from the Southern ice field and frequently calves icebergs into the channel. The channel forms the northern boundary of Chile’s vast Bernardo O’Higgins National Park.