Sioux Quartzite on the Prairie
Touch The Sky Ntl. Wildlife Refuge, Minnesota
MN-03037-NWR
Fractured slab of Sioux Quartzite on the prairie, Touch the Sky National Wildlife Refuge, Rock County, Minnesota. Photo © copyright by Gary Alan Nelson.
MN-03037-NWR
Fractured slab of Sioux Quartzite on the prairie, Touch the Sky National Wildlife Refuge, Rock County, Minnesota. Photo © copyright by Gary Alan Nelson.