Mountain biked this over a 2-day period. It was a fun journey. Definitely intermediate to challenging. Had some terribly soggy/muddy conditions to work through on the second day. I gave it one less star because there was some trail signage confusion that almost caused me to get very lost and there were sections knocked out that we had to haul our bikes around in some very slippery terrain.
Our favorite family cave. Pretty short hike not too intense my kids can make it ok. So fun to go through the cave though and see how beautiful and incredible this earth is! Our favorite tour, totally worth it.
It's best to get your tickets for the tour online. That way you can be sure what time you are getting and plan accordingly. If you are concerned about the hike, get there a little early and take your time.