Here's a nice article on Sulpher Cave in Steamboat Springs -
http://www.denverpost.com/opinion/ci_14659226 - where they show Mike Frazier and other notable NSS cavers in the stinking cave that had odors and other things in the air that can create holes in your shirt, color pennies black, and one wonders why it's all happening. Hazel Barton has studied the area, along with other scientists; and, all because Mike went looking in there for worms???

He found snotties and other attractions, as well, so...read away and find out for yourself.
