Mushroom Rock State Park

200 Horsethief Rd., Marquette, Kansas

Dakota sandstone concretions, some having mushroom shape.


Sign for Mushroom Rock State Park

Photo taken by Ruth Reynolds




Mushroom Rock State Park is a geological phenomenon of sandstone spheres balanced on softer pedestals of sandstone. The power of erosion weathered away the softer portions of sandy rock. The spheres of the naturally cemented portions of the sandstone are what we see today.

Nearby was the Smoky Hill wagon trail, and these unusual formations, which resemble giant mushrooms reaching for the sky, served as landmarks and meeting places for Native Americans and pioneers.

Managed by staff from nearby Kanopolis State Park, Mushroom Rock is a unique site in a history-rich region.

Attractions - Picnic tables and a vault toilet are available, however, camping is not allowed.

Location - Mushroom Rock is located just one mile south of Carneiro (1/4 mile east of 25th Road and Avenue K) in Ellsworth County. Mushroom Rock State Park is a satellite of Kanopolis State Park. No camping is allowed and no vehicle permits are required

This information is provided by The Kansas Department of Wildlife and Parks

Update Log 

  • August 7, 2016: Updated by Bill Eichelberger: Mapped
  • January 11, 2012: New photos from Ruth Reynolds
  • January 10, 2012: Added by Ruth Reynolds


  • Ruth Reynolds - ruthmusic [at] yahoo [dot] com
  • Bill Eichelberger - wallyum [at] hotmail [dot] com