Uncover the Mysterious Underground World Hiding in Pennsylvania’s Penns Valley

Hidden across the Keystone State are mysterious underground spots just waiting to be explored. While there are plenty of attractions on the surface, going below ground is a far different experience altogether. Natural caves, caverns, mines, and tunnels often evoke a sense of mystery and fascination, especially if they served an important historical purpose or possess a unique natural feature. One of the most fascinating underground attractions in Pennsylvania is Penn's Cave, and it's one you can tour by boat.

The History and Location of Penn's Cave

The Historic Penn's Cave and Wildlife Park is located in Penn's Valley, which is also known by its historic name, the Valley of Karoondinha, in Centre Hall. This area is within "the Ridge and Valley section of the Appalachian Highlands." Centuries ago, the Seneca Indians discovered the cave and used its dry rooms for shelter, as did early explorers.

In the late 1800s, the cave was converted into an attraction, drawing tourists who wanted to experience this water-filled cavern, the only one of its kind in the U.S. They would also stay at the nearby Penn's Cave Hotel to complete their getaway. While the hotel is no longer open for overnight stays and has been turned into the offices for the cave and wildlife park, you can still take a tour of the cave. Both the hotel and cave are on the National Register of Historic Places. This attraction is also home to a wildlife park, visitor's center, café, and gift shop.

The Cave Tour

If you've ever wanted to explore a cave by boat, Penn's Cave is the only all-water cave in the country. Upon arrival, you will climb down a set of 48 steps to the boat launch and hop aboard a flat-bottom motorized boat that will guide you through the large limestone cavern on an awe-inspiring journey. The guided boat tour lasts 45-50 minutes, and you'll get to see numerous stalagmites and stalactites throughout the cave system.

The geology below ground is fascinating, and some of the formations are named after famous places they resemble, including "The Statue of Liberty" and "The Garden of the Gods." Lights illuminate the cave's interior, allowing you to gaze upon its natural splendor. One section of the cave system features multi-colored lights, creating a mesmerizing effect that will enable you to see the details of the rock formations.

It's advisable to bring walking shoes as well as a jacket or hoodie with you, as the cavern temperature remains a cool 52 degrees year-round, regardless of the temperature above ground.

A Subterranean Adventure

Have you been to Penn's Cave yet? Guaranteed you've never had a subterranean adventure quite like this before! As the only all-water cavern in the country, it's a natural wonder worth taking a boat tour through. For location, additional attractions, and to book tour tickets, visit the Historic Penn's Cave & Wildlife Park website. You can also take the Farm-Nature-Wildlife bus tour through the wildlife park's pastures and forests during your visit to Penn's Cave. You'll have the opportunity to view a variety of animals, including bison, bighorn sheep, wild horses, and more.

Curious about exploring other underground attractions? Check out a hidden cave and, afterwards, dine in a catacombs restaurant for a cave-themed day in Pennsylvania.

Feeling inspired? Try planning your own underground trip in Pennsylvania using Only In Your State’s itinerary planner.