• Spires of Cedar Mesa sandstone in Chesler Park (Needles District)


    National Park Utah

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  • Some unpaved roads are closed

    Recent rains have caused extensive damage to some roads in the Needles District and some of the roads into the Maze District. More »

  • Safety in Bear Country

    Black bears have been seen in the Needles, Maze, and along the Colorado River. Be alert and store food and garbage properly: in hard-sided, latched containers (or your vehicle) when not being prepared or consumed. More »

  • New backcountry requirements in effect

    Hard-sided bear containers are required for backpackers in parts of the Needles District. More »

Sommerville Formation

Brown, layered cliffs of the Sommerville Formation along the road to Hans Flat.
Brown, layered cliffs of the Sommerville Formation along the road to Hans Flat
NPS photo by Gary Cox

This layer does not occur within Canyonlands, but may be seen at neighboring Glen Canyon National Recreation Area.

Mid to late Jurassic (144 to 208 million years ago)

Depositional Environment
Coastal, shallow marine and tidal flats

Sandstone, shale, siltstone and gypsum forms slopes and cliffs

Exposed along the Green River and in cliffs above the road to Hans Flat Ranger Station in the Maze

Did You Know?

Common Raven

The common raven displays abilities to play and problem-solve rare among animals. This member of the crow family is also very vocal, using a variety of sounds for communication. Perhaps because of these qualities, ravens have achieved a certain stature in both European and Native American folklore. More...