Nunataks and valley glaciers: Over the mountains and through the ice

Models of the first peopling of the Americas characterize arrival routes either along the coast or through the ice-free corridor following the Last Glacial Maximum. While the pendulum has currently swung somewhat towards the coastal route, archaeological evidence for either entry is lacking. In this paper we introduce a third option, an icy corridors entry route. We argue that the traditionally envisioned corridor is an unnecessary feature for...