Bat Caves

Historical marker location:

401 Business U.S. Highway 18 North, McGregor, Iowa

( Marker can be reached from River Street (Business U.S. 18) 0.4 miles north of Front Street, on the left when traveling north.)

The famous explorers Lewis and Clark passed through Iowa in 1804 on their journey to the Pacific Ocean, but they didn't actually set foot on Iowa soil. The expedition traveled along the western border of Iowa, which was then part of the Missouri Territory.