Héetínowúnoo'óó'

The Middle Popo Agie River descends from the Wind River Range into the basin below. In a canyon at the mountain's foot, the stream disappears into a limestone cavern and emerges again farther downstream. The river country formed part of a wider landscape used by Shoshone communities for hunting and travel. During the 1820s, traders and trappers began holding gatherings in the neighbouring Green and Wind river country, meeting Indigenous partners to exchange goods and furs.