Thanks for posting this!
Good to see someone else getting around to using algorithms to search for caves/pits. Its not easy even using computers since they don't have alot of common sense. Not as much of the surface is covered by usable NACs as you might think. I still would like to see their list of identified caves/pits. Seems like they keep that under their hat. What about sharing their data? Even their papers would likely not list every one. What we want is a nice pictoral and locational listing with basic size/depth info.