The Castles - Harding County, SD
Posted by: 
YoSam.
N 45° 31.432 W 103° 10.451
13T E 642584 N 5042769
Steep-walled, flat-topped buttes standing 200 to 400 feet above the surrounding prairie, The Castles contains exposed rock of Upper Cretaceous, Paleocene, Oligocene, and Miocene Ages. Cretaceous and Tertiary beds contain a variety of flora and fauna fossils. The site is located within the Custer National Forest.
Waymark Code: WMPMQ5
Location: South Dakota, United States
Date Posted: 09/22/2015
Views: 3
County of site: Harding County
Location of site: SD Hwy 20, ¼ mile W. of SD-79, Reva /or SD-20, 20 miles E. of Buffalo
Year designated a landmark: 1976
Ownership: Federal
Size: 987 Acres
"Two natural landmarks dot the South Dakota sky in Harding County on the Sioux Ranger District, Custer National Forest. Whether looking for a day trip or to spend a long weekend in beauty and solitude you’ll likely enjoy discovering the fascinating geological formations across the eight units on the Sioux Ranger District.
The Castles, Slim Butte Unit
Adjacent to Reva Gap Campground, the Castles, a registered natural landmark consisting of steep-walled flat-topped buttes rising 200 – 400 feet above the rolling prairie offers an exceptional peek at our nation’s natural heritage. The Castles and Capitol Rock Natural Landmarks are significant due to the variety of rock ages illustrated by the towering buttes." ~ US Forest Service
The Google map shows a trail/road going from the loop down in the valley...THIS DOES NOT EXISTS. Not even a trace of a animal trail exists there...where Google got it I have not idea.