Cedar Sink - Mammoth Cave NP

Go down the cedar sink trail and keep right when the loop starts. About halfway down the trail there's a small trail to the right that leads to a sinkhole cliff. That's where most of the pictures were taken. If you hug the cliff, you can keep walking for 1/4 mile to more and more sinkhole cliffs. Eventually you'll pop out at a really big one. Hike uphill out of the sinkhole and you'll pop out at a small trail that will take you back to the main trail. Much cooler than the cave tours in my opinion.

This was a good hike through a pretty forest, and maybe it was when we came, but I had expected to be able to see the water moving and instead it looked like a dirty pond in a sinkhole. It was still cool, but I wish I'd managed my expectations a bit better.

I like a hike that has really cool stuff to see along the way, and this fits the bill. There's a river as well. It's a pretty easy hike, but if you're averse to stairs be warned-- there re quite a few!