mudder91: The area where the cache was planted has been heavily re-landscaped, and is now highly exposed. The stand of trees is gone. If the cache next to the stump is still there, it's under a foot of mud (deeper than I was able to dig up). For this park, the cache had a long and successful run (3.5 years). But, sadly, it is now time to call this one done.
Thanks to all of those who took an interest.