| Millie Hill Bat Cave Viewing Area | |
|---|---|
 | |
| Location | Millie Hill Bat Cave Road |
| Nearest city | Iron Mountain, Michigan |
| Coordinates | 45°49′16.02″N 88°3′22.12″W / 45.8211167°N 88.0561444°W |
Millie Hill bat cave (also known as Millie Mine bat cave) is an abandoned iron mine in Iron Mountain, Michigan that is now one of the largest bat breeding colonies in North America.[1][2][3] The vertical mine shaft is blocked by a steel grate, which prevents entry by humans but allows bats to enter and exit freely.[4] The bat cave is designated as an official Michigan Wildlife Viewing Area.[4]
- ^ Robinson, John (2020-03-06). "Michigan's "Bat Cave"". 99.1 WFMK. Retrieved 2023-11-03.
- ^ Vories, Kimery C.; Throgmorton, Dianne, eds. (2000-11-14). "Proceedings of BAT CONSERVATION AND MINING: A TECHNICAL INTERACTIVE FORUM".
- ^ Flesher, John (1996-05-24). "Scientists race to save iron mines for hibernating bats". The Daily Herald. p. 45.
- ^ a b "Millie Mine Bat Cave". Pure Michigan | Official Travel & Tourism Website for Michigan. 2022-01-10. Retrieved 2023-11-03.