Floating the Yampa River in Dinosaur National Monument is a trip not many can savor, as the Yampa is an unbridled river, one that slams shut its rafting window by late June. As the snowmelt wanes, the river simmers down, and the rock gardens raise themselves.
Though the Yampa flows through northwestern Colorado into northeastern Utah before melding with the Green River, the landscape is much more southern Utah -- big, towering sandstone monoliths fluted by the river. Main canyons dwarf boaters and swivel their heads around in awe.