Cook Island, an uninhabited volcano buried under a thick white coat, seems to float on the surface of the ocean. There is a striking contrast between the imposing and peaceful mass of glistening ice and the brown sheer cliffs that loom over its shores. Its highest peak, Mount Harmer, rises to an altitude of 1,115 metres. This island, the largest in the Southern Thule island group, was discovered by James Cook in 1775, the first explorer to have crossed the Antarctic Circle in search of a new continent. In 1819, the Russian explorer Fabian Gottlieb von Bellingshausen christened it as a tribute to this illustrious explorer.