Tranquility Salt Cave is the one and only salt cave in Columbus, Ohio. Tranquility Salt Cave is not your average cave. With the powerful use of salt from the Himalayas, only 45 minutes are needed to feel cleansed, inside and out. If youre ready to try a whole new form of relaxation, book an appointment at our salt cave in Columbus, OH, today! Although around for centuries, salt therapy, also known as halotherapy, has only just recently become a sensation in the United States. With over 10,000 pounds of pure Himalayan salt lining the walls and heated floor, youll experience an effortless and pain-free deep relaxation.