Posted on May 31, 2013May 15, 2023 by OkieroverMonument Rocks, The Keyhole (Post #346) 5/31/2013 Monument Rocks, Kansas.The keyhole. I highly recommend you drive out there and see these. Thanks for reading and Happy Rovering. Related posts: Monument Rocks, Kansas (Post #371) 7/29/2013 Whiskey Creek Ford (Post #354) 6/17/2013 What? Code 44 again? (Post #304) 11/21/2012 #Hibernot (Post #439) 1/28/2014