There are several caves in Ohio. Many of the caves are open to the public, including the Ohio Caverns in West Liberty, Old Man’s Cave in Hocking Hills, the Crystal Cave in Port Clinton, Perry’s Cave in South Bass Island and the Seneca Caverns in Bellevue.
The Ohio Caverns are a popular tourist attraction. The caves are several thousands of years old, and the temperature inside them remains 54 degrees Fahrenheit all year. The constant temperature preserves crystals within the caves, with the oldest crystal estimated to be 250,000 years old.
The Seneca Caverns is also a popular attraction. These caves offer a walking tour of the caverns and even gem mining. The caverns were discovered in 1872 and have been historically preserved and open to the public since 1933.