bering sea, arctic ocean, drake passage, arctic circle, little diomede, northwest passage, pleistocene epoch, aleutians, tatar strait, icefield, lake ladoga, subarctic, novaya zemlya, steppes, vitus bering, pribilof islands, ussuri, wrangel island, gondwanaland, antarctic continent, taiga, subpolar, great slave lake, floes, strait, antarctic peninsula, supercontinent, pamirs, ob river, tundra, siberians, overland, mammoths, aleuts, northeast passage, stampeders, glacier, transpolar, thor heyerdahl, athabaskan, spitsbergen, subantarctic, ural mountains, skagerrak, weddell sea, triassic period, balsa raft, saiga, franz josef land, cape horn, permian period, ellesmere island, magnetic pole, equator, polar, himalayas, chuvash, arctic, laptev sea, arctic archipelago, holocene epoch, icebound, roald amundsen, nenets, caucasus mountains, kamchatka peninsula, homo erectus, peopling, cape flattery, baranof island, fjord, isthmus, wrangell mountains, cape cod canal, circumpolar, syr darya, walruses, landmasses, kodiak island, pleistocene, dnieper, okhotsk, mesolithic, dnestr, ross ice shelf, baltic sea, adelie penguin, st. lawrence seaway, laurasia, yakutsk, spitzbergen, amur river, northernmost, jurassic period, bowhead, tropics, kamchatka, dniester, tsangpo, gaillard cut, ice floe, saint lawrence seaway

strait