Just east of the town of Dinosaur a dramatic stone ‘reef’ rises out of the desert floor, separating the flatter semi-desert flats to the south from the rising and beautiful terrain that slopes up to the Yampa Canyon. Though it appears nearly impregnible, there is an opening at Martin Gap. A rough road enters this area, though you can also park nearer the highway and walk. Extensive sage flats on the southern side of the reef should be checked for Sage Sparrow and Sage Thrasher, while the thick pinyon-juniper woodland on the north side have Pinyon and Western Scrub-Jays, Black-throated Gray Warbler, Plumbeous Vireo, and Juniper Titmouse, among others. Canyon walls throughout have Canyon and Rock Wrens, and there is an outside chance of Northern Pygmy-Owl.
Dates of Access: Open all year
Parking: Gravel parking area
Lodging: Primitive camping
Handicapped Access: None
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