Great Saltpetre Cave Open House Weekend
Great Saltpetre Cave 237 Saltpetre Cave Road, Mt. Vernon, KY, United StatesThe next Great Saltpetre Cave Preserve Open House is: Saturday, May 18, 2024 - 10am to 3:30pm Sunday, May 19, 2024 - 10am to 3:30pm. (Note: The Open House is always the weekend after Mother's Day.) Great Saltpetre Cave was a significant source of saltpeter for gunpowder during the