BlaireP
If you want something to do above ground on your trip to Mammoth cave, this is a good option. Not too much traffic and you get a few good views of the river. Check out river styx while your in the area and see where the cave and river react. Nothing to exciting to see here, but its a nice little stroll.
thegoodguyz
I was looking to waste some time hiking while my family was in the caves, and this trail was a good one. Nothing spectacular, but still a nice hike through the Kentucky hills.
Shipbird1969
This is a nice short trail to the Echo river spring. Parking is at the Mammoth Cave Ferry. There are a couple benches along the way. There are waysides explaining the hydrology. A very peaceful place.