The masses of ice in the straits leading to the Kara Sea, and the impenetrable nature of the pack near Novaya Zemlya, had suggested the advisability of avoiding the land and, by keeping a northerly course, of seeking a passage in the open sea. They sailed northwards, and, on 9 June, discovered Bear Island in the Barents Sea. Continuing on the same course they sighted a mountainous snow-covered land in about 80° N., soon afterwards being stopped by the polar pack ice. This important discovery was named Spitsbergen, and was believed—incorrectly—to be a part of Greenland.