This was a real head-scratcher. Location of cache in the description didn't match the coordinates we were led to. We were led to a bridge, but the logs of those who found it talked about slippery rocks. One log said they saw it sitting on a downed tree; did they leave it there? If so, I bet it wasn't long before it was history.
We explored the cave with a couple of pen flashlights. Didn't quite make it into the 'straw' room that RGS talked about because we couldn't all crouch low enough and there was too much water to pass through. But I could see the room in the distance. We took some pictures, so I might post some here, if this caches isn't archived soon.
As suggested, we looked in every nook and cranny, which was really fun. If you look hard enough, you might even find a Magellan GPS, like I did! After bringing it home and examining it, turns out to be the property of Bill Elliot, a cave biologist who joined the Missouri Department of Conservation in 1998. I sent him an e-mail to let him know I found it and asked him to contact me. He has been published in Missouri Conservationist magazine. Here's a link about him I found on the internet: http://www.utexas.edu/depts/tnhc/.www/biospeleology/