Jeffers Petroglyphs Historical Site
Location
From the website: "Amid the prairie grasses are islands of uncovered rock, where American Indians left carvings —petroglyphs— humans, deer, elk, buffalo, turtles, thunderbirds, atlatls and arrows. They tell a story that spans 5,000 years. The glyphs served many functions, including recording important events, depicting sacred ceremonies, and emphasizing the importance of animals and hunting."
They host homeschool days periodically through the year. They have an interpretive building which contains hands on and educational exhibits.
The official website is listed below, but the following website is maintained by volunteers and is very helpful when planning a trip out there!
http://www.jefferspetroglyphs.com/