For the most up-to-date deals and special offers, call Cave of the Winds today! To pick a tour time that's most convenient for you, order your tickets ahead of time online! Did you know that the Cave of the Winds is open 364 days a year?  Don't stay at home this holiday season, take your our-of-town guests on a Winter Geo|Venture!   Come explore Cave of the Winds on your birthday, and we'll let you in for FREE! Proper valid ID required and may include Driver's License including a photo, State-issued or Government-issued photo ID, or a Government-issued Passport. If you are under age 18 and don't have any of the above mentioned ID, an original or certified copy of a Birth Certificate is required. Free Ticket for Discovery Tour ONLY.