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The preserve's most visited location. Serpentine Hot Springs, (Inupiaq: Iyat, the Inupiaq word for cooking pot, or Uunaatuq), previously known as Arctic Hot Springs, is on the northern part of the Seward Peninsula at 65°51′N, 164°43′W. The springs are on the right bank of Hot Springs Creek which flows to the Serpentine River, 47 miles NW of Imuruk Lake.