| Name | Niagara Cave |
| Address | 29842 Co Rd 30, Harmony, Minnesota, United States |
| Date | 0000-00-00 |
| Time | 00:00:00 |
| Category | unknown |
| Description | This large midwestern cavern features impressive rock formations and an underground waterfall.... |
| Coordinates | 43.51400, -92.05510 |
| Web address | /places/niagara-cave-1 |