Monument Rocks (Kansas)

Monument Rocks (also Chalk Pyramids) are a series of big chalk formations in Gove County, Kansas. It has many fossils. The formations were the first landmark chosen by the US Department of the Interior as a National Natural Landmark. The chalk formations reach a height of up to 70 ft (21 m). It includes formations such as buttes and arches. The carbonate deposits were laid down during the Cretaceous Period in what was then the Western Interior Seaway. It split the continent of North America into two landmasses. They are estimated to have been formed 80 million years ago. History On January 29, 2008, Monument Rocks, 25 miles south of Oakley, Kansas, and Castle Rock, 31 miles to the east, together were named as one of the 8 Wonders of Kansas. References Other websites Monument Rocks (Chalk Pyramids) Monument Rocks/Rock Pyramids Monument Rocks Archived 2019-10-19 at the Wayback Machine Gove County Map Archived 2019-10-09 at the Wayback Machine, KDOT