Victoria Island, Canadian Arctic Archipelago. The tundra dominates these treeless areas with a rocky year-round frozen ground. Subject to strong winds with very low rainfall, they are plunged into long, icy, windy winters with a permanent night. The summer period offers only a very short growing season for the vegetation thanks to its permanent sunshine. Some mammals such as muskox, caribou or arctic hare are very well-adapted to these harsh conditions.