I wouldn't recommend it, there is a lot of bending, squatting, stooping, and stairs. Plus a 1/2 mile+ walk up to the entrance that they give you a time limit on and if you can't make it under the time limit they turn you back and won't let you go in the caverns.
I would suggest the short hike, though you may choose to NOT go into the second "room" of the cavern once inside. When you buy your tickets, request a golf cart to get you to the cave entrance which is a good distance from the starting place...I did, for my bad knees. It's a great tour, go for it!
They have a wheel chair for the walk to the entrance. On our tour there was a man in a wheel chair a d he could climb the few stairs on his own.
Just like Kim Capwell said, only rhe short hike, a person with bad knees wouldnt be able to go in the cave, there are lots of steps and tight areas, rule of thumb is if you cant make it to the cave entrance within 30, minutes they will not let you enter.
The guide said the one hour hike is intended to be as ADA accessible as they can comply with given the nature of the site. It looks like they have a golf cart that can be used to and from the cave entrance.
There is an easy trail to explore a portion of the caves that is recommended for those who may have a disability.
Maybe the short hike. There are 3 different guided hikes. The shortest one has a flat walk to a cave entrance and doesn't go very far into the cave. That would be the only possibility, in my opinion. I don't believe it's technically handicap accessible but could be mistaken. Anyone else know? Jason is correct on the longer 2 hikes.
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