Roxborough 

Location: Douglas County, at Roxborough State Park
Size: 967 acres
Designated: 1979
Landowner: Colorado Parks & Wildlife and The State Land Board

Massive erosional remnants of Fountain Formation sandstone dominate the landscape of Roxborough State Park.  The park encompasses a geologic span of 500 million years in an east-west distance of less than a mile. Exposed geology dates from Precambrian to Late Mesozoic, including hogbacks of Cretaceous, Permian and Pennsylvanian age.  The vegetation of Roxborough is representative of the foothills region.  Ponderosa pine and Douglas fir dominate higher elevation forests, and oak thickets cloak the lower elevations.  Mixed grass prairie is characteristic of the areas between hogbacks where landslide debris has accumulated.