Keyhole Arch, Monument Rocks, KS
SGWeaver_20091002_10915-monumentrocks.JPG
Keyhole Arch at Monument Rocks, Kansas. Monument Rocks are composed of the Smoky Hill Chalk member of the Cretaceous Niobrara Formation.
SGWeaver_20091002_10915-monumentrocks.JPG
Keyhole Arch at Monument Rocks, Kansas. Monument Rocks are composed of the Smoky Hill Chalk member of the Cretaceous Niobrara Formation.