The Greys River runs north through a beautiful forested valley situated between the Wyoming Range on the east and Salt River Range on the west. This steep section of river starting at Squaw Creek Campground is for advanced paddlers with many class III to class IV rapids that run through stretches of boulders and narrow canyon sections of the river. Scouting this section of the river beforehand is strongly advised. The river calms significantly at the take-out at Bridge Campground.