Places 25 Underrated U.S. Places You Should Visit Before You Die A.C. 0 MINNESOTA Go way (way) back in time with the Jeffers Petroglyphs. Spotted amongst the prairie grass, this site is home to carvings left by Native American ancestors, some of which are 7,000 years old. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 <1 ... 2122 23 242526>