I absolutely adored this place.
The Hole in the Rock seems really far up but don't be fooled. There are a few nice paths to the top. It does not take long to get to the hole.
It is a nice view up there.
It is not far out if the way. It is right across the parking lot from the Zoo.
I definitely recommend this place if you want a nice stroll and view.
You can even reserve one of the pavilions.