Named after its 1800s owner, Robert Graham, the Graham Cave is a Native American archeological site in Montgomery County, Missouri. It is noted for having contents that date back to the Dalton and Archaic periods from 10,000 years ago.
Primarily using the Graham Cave as a shelter for hogs, Robert Graham became interested in archeology after finding artifacts on the site. He had his collection, recovered from this portion of his property, and all of it is now with the University of Missouri who did the first professional excavation on the site from the late 1940s to early 60s.
The Graham Cave is now a part of a bigger state park known as the Graham Cave State Park. Visitors are not allowed to explore the insides of the cave, but can learn a lot from the signs located on the entrance.