M-Audio just posted an article on us this month about the new Microtrack II hand held digital recorder.
"I recently went on a field recording trip to Petty Johns Cave in northwest Georgia. The cave is located on the east side of Pigeon Mountain in the Appalachian Plateau. It has small rivers and waterfalls deep at the bottom of the cave, which is about four hours below ground level. I used the MicroTrack II to capture the unusual ambient sound of water flowing through strange cuts in the rocks. All the recordings ended up getting included in my new Sony effects library. The MicroTrack held up very well even in the most challenging conditions."
See full article here