Ostrov Bennetta, or Bennett Island as it is known in English, is the largest of the De Long Islands located in the northern extents of the East Siberian Sea. Mount De Long dominates Bennett Island and is the highest point in the archipelago topping 426 meters (1,398 feet). The frosty white landscape of Bennett Island is the largest permanent ice cover within the De Long Islands. In recent years scientists have been able to map four separate glaciers forming the solid ice cap of this island. Together the rivers of ice have a total area over 25 square miles and sit on high, basaltic plateaus fringed by steep cliff-like slopes.