In business since 1930, Lost River Caverns located in Hellertown, PA offers guided walking tours of our natural limestone cavern complete with an underground river! These educational tours offer insight into the geology of our cave and its formations, as well as the history of the property and surrounding community. Also located on the property is Gilman’s “At The Cave.” A complete jewelry, mineral, and lapidary supply house providing a variety of stones, crystals, findings, and tools for all your collecting, stone-cutting, and jewelry-making needs!