The Lemaire Channel is a spectacular sight with enormous sheer cliffs falling straight into the sea. It's a narrow channel flanked by the Antarctic Peninsula on one side and Booth Island on the other. So photogenic is the channel that it's nicknamed 'Kodak Gap', and it's only once you're well within it that a way through is visible. Unfortunately, ice can sometimes obscure the path and ships need to retreat and sail around Booth Island. At the northern end of Lemaire Channel are a pair of tall, rounded and often snow-capped peaks known as Una's Tits that are also popular with holiday snappers. The channel was first navigated by Belgian explorer de Gerlache during his 1898 expedition aboard Belgica, and, curiously, named it after the Belgian explorer Charles Lemaire, who explored parts of the Congo.