Mark,
There was a pit like that to the west of the 5th fairway, about 80 yards from the green, near where your dorms/maint buildings are.
Jeff Brauer,
I think it's a fascinating question.
I've noticed abandoned features at many of the older clubs I've played.
I've always been curious about their creation and abandonment.
In many cases I wished that I had had more time to examine them and the surrounding area.
Some seem to be abandoned footpads.
Usually, if there's one, there's more
The answer to uncovering the mystery may lie with old aerials.
Jamie Slonis tipped us off to "Historicalaerials.com.
Viewing the old aerials may provide some, or complete insight into what these abandoned features were used for.
In some cases, I see the footpads may have been abandoned practice tees, set randomly about the course.
In other instances, I've noticed that a "fairway" edge was denoted by an abandoned footpad, indicating a much wider and often repositioned fairway.
It's an interesting subject