Neptune's Cavern 2024-12-19 Roadnow click anywhere on map to find more poi nearby Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Neptune's Cavern Quincy, MI 11.97 mi Bronson, MI 16.12 mi Union City, MI 18.70 miInterstate highway exits close to Neptune's Cavern Exit 10, i69 2.53 mi Exit 13, i69 4.29 mi Exit 16, i69 8.83 miInterstate highways close to Neptune's Cavern i69 map 2.53 mi i80 map 19.78 mi i90 map 19.78 miState roads close to Neptune's Cavern US 12 MI map 3.27 mi MI 86 map 4.13 mi IN 120 map 18.82 mi