Establish a drainage, put down rock, agricultural fabric, rock, smaller rock, EquiTerr, and fill with pea gravel. It might be enough just to use the rock and ag fabric, but EquiTerr keeps it from movign around. It's an interlocking system of honeycombed plastic frames that are designed to stay there. Can't be dug up by pawing, will tolerate traffic of heavy equipment, etc. My vet put this down at his gates where his draft horses dug ditches waiting for their feedings....no more ditches. We have it in the stalls...no more holes.
Thanks guys. For the record, I don't own the facility in question. Just a boarder who doesn't fancy going for a swim when I have to get my guy out of the pasture. I'm going to start looking into gravel / other costs in my area.
Yikes. @_@ Never being able to try it out sounds terrible. Unfortunately, I've been trying to get this hole filled for almost 2 years and there hasn't been any action with it. There also isn't really anywhere else for the gate to be moved to.
I take it frogs living in that puddle isn't a good sign? XD