- Penn's Cave - America's Only All Water Cavern and Wildlife Park ...pennscave.com
- Open every day except Thanksgiving, Christmas, and New Years. Memorial Day through Labor Day, 9am to 6pm. Remainder of the year 9am to 5pm. Special group rates available, please call for details. Copyright 1997, Web Site Services, All Rights Reserved ...lostcave.com
- Road report and review of commercial cave tourist attraction near Hershey, Pennsylvania.www.roadsideamerica.com/attract/PAHERecho.html
- Coral Caverns Showcave, Bedford Pennsylvania . It is the only fossil coral reef cavern known to be in existence. It's Fossils are 400 million years old. Offering guided tours.coralcaverns.com