Several months ago, there a post about a motorized ascender. The video below may show the same ascender, but I think it is a newer video:
http://www.youtube.com/watch?v=icopDhMjubU I think a propane version using Coleman propane tanks would be better suited for some pits. Right ? If you left the cave or pit using this device, you would have to say in your trip report that you "motored up the pit." Right ?
