» Coral Caverns    Features fossilized coral reef. Includes photos, schedule, directions. Located 7 miles west of Bedford.    http://coralcaverns.com/

» Crystal Cave Park    Offers a forty-five minute interpretive tour. Includes dates and hours of operation, admission rates, and map directions to location in Kutztown.    http://www.crystalcavepa.com/

» Indian Echo Caverns    Offers 45-minute guided tour. Includes virtual tour, history, hours, fees, map directions, photos and contact information. Gift shop on premises. Located near Hershey Park.    http://www.roadsideamerica.com/attract/PAHERecho.html

» Laurel Caverns    Guided tour lasts 55 minutes. Includes information about separate wild tour, hours, admission fees and contacts. Located east of Uniontown.    http://laurelcaverns.com/

» Lincoln Caverns    Offers one-hour guided tour. Includes hours of operation, rates, group tours, directions and contact information. Campground, picnic area and nature trails on premises. Located 3 miles west of Huntingdon.    http://www.lincolncaverns.com/

» Lost River Caverns    Offers guided tours. Includes history and geology of the cave, hours, directions and contact information. Gift shop, museum and picnic area on premises. Located in Hellertown.    http://lostcave.com/

» Penn's Cave    Offers one-hour tour by motorboat on an underground stream. Includes schedule and rates, special events, wildlife tours and contacts. Gift shop on premises. Located in Centre Hall.    http://pennscave.com/

» Woodward Cave    Includes description of guided tour, rates, hours, map and directions, souvenir store and campground. Located east of State College.    http://www.woodwardcave.com