Someone planning cave trips might find this of interest. I haven't used it myself.
http://www.pathwrangler.com >From their "about" page: Let's face it, planning an adventure trip or an outdoor excursion is like herding cats. It is maddening to get everyone and everything prepared. We've built a collaborative web tool that makes trip planning not only easy, but fun. The goal is empower you so that your only limitation is your imagination and sense of wonder. It is used just as easily by professional guides running recurring expeditions to the Himalayas to just a handful of avid outdoor enthusiasts planning their next hiking trip in Yosemite.
