Freddy--When you visited Fox's Gap you either parked in or drove by this small dirt parking area at the entrance. The picture below shows the location of Wise's farmhouse (the red square) and the location of the well where the bodies were dumped (red X). You can see how close the well was to his house. Although neither the house nor the well are marked today, you can still see a circular depression in the ground where the well once existed. The well has been excavated and sealed and is on park property. I also have a postcard from the early 1900s that shows Wise's house and marks the spot where Reno was shot, but it's in a PDF file.
Reno's monument is the large square area to the right and the 17th Michigan Field is across the street from that. General Gardner's monument is much smaller--it's near the two historical markers across from the parking area (he was taken to South Mountian Inn where he died. It's still operating. I had a nice buffet brunch there not long ago.)
It's hard to visit such places without it invoking some kind of emotional response, knowing what took place there--I sometimes get goose bumps walking the ground up there.