Boonie Buster
Stuck on a Curb
I personally think getting the water out will help from past experiance with this kinda stuff..
But a good example of how deep the dirt is there--look at the hole thats to the one side of it (BYS side)--thats bottomless and just loose dirt...
Ya, that thing has been a bottomless pit for as long as i can remember... and like you said, puting rocks in will only last for so long, before they are uncovered and start becoming a problem again.