"San Rafael Swell" by Bureau of Land Management - Utah , public domain

San Rafael Swell

Region - Utah

The San Rafael Swell is a large geologic feature located in south-central Utah about 30 miles (48 km) west of Green River, Utah. The San Rafael Swell, approximately 75 by 40 miles (121 by 64 km), consists of a giant dome-shaped anticline of sandstone, shale, and limestone that was pushed up during the Paleocene Laramide Orogeny 60-40 million years ago. Since that time, infrequent but powerful flash floods have eroded the sedimentary rocks into numerous valleys, canyons, gorges, mesas and buttes. The swell is part of the Colorado Plateau physiographic region.

maps

Visitor Map (southern part) of the BLM Moab Field Office area in Utah. Published by the Bureau of Land Management (BLM).Moab - Visitor Map - South

Visitor Map (southern part) of the BLM Moab Field Office area in Utah. Published by the Bureau of Land Management (BLM).

Visitor Map (northern part) of the BLM Moab Field Office area in Utah. Published by the Bureau of Land Management (BLM).Moab - Visitor Map - North

Visitor Map (northern part) of the BLM Moab Field Office area in Utah. Published by the Bureau of Land Management (BLM).

Travel Map of Fremont River area in the BLM Henry Mountains Field Station area. Published by the Bureau of Land Management (BLM).Fremont River - Travel Map

Travel Map of Fremont River area in the BLM Henry Mountains Field Station area. Published by the Bureau of Land Management (BLM).

https://en.wikipedia.org/wiki/San_Rafael_Swell The San Rafael Swell is a large geologic feature located in south-central Utah about 30 miles (48 km) west of Green River, Utah. The San Rafael Swell, approximately 75 by 40 miles (121 by 64 km), consists of a giant dome-shaped anticline of sandstone, shale, and limestone that was pushed up during the Paleocene Laramide Orogeny 60-40 million years ago. Since that time, infrequent but powerful flash floods have eroded the sedimentary rocks into numerous valleys, canyons, gorges, mesas and buttes. The swell is part of the Colorado Plateau physiographic region.

source

Wikipedia

also available

National Parks
USFS NW