Agayakan
The Agayakan descends from the Suntar-Khayata mountains into the Agayakan depression of the Oymyakon highlands. At its meeting with the Suntar it forms the Kyuyente, a tributary of the Indigirka. Forest and mountain valleys surround these headwaters in one of the coldest regions of northeastern Siberia. The rivers carry their waters northward through the mountains toward the Arctic seas.