This cache is located just north of the bike path in Rock Island, with parking available at Schweibert Park. As of August 2014 the cache has been moved from its old hiding spot. You no longer need to climb any trees to reach this cache, but it's a bit trickier to find. You will need to unscrew the cache before removing it. The cap must stay attached to its tether.
Be safe, heed the title, and have fun!
Congrats to 2lostpups and bluedawgsbelle on the FTF!