Marietta Sand Prairie - Marshall County
GPS Coordinates: 42.099407, -93.039529
Description: 229 acre county sand prairie (dry grassland).
Directions: From intersection of IA-330 and 180th (north end of the town of Marietta) follow 180th Street 2.4 miles as it winds west and north. At Knapp Ave turn right (NORTH) for 1/2 mile to the parking lot on the right (EAST) side of the road.