06-10-2008, 06:16 AM
Still Hope, the "divining" or "witching" method as discussed in "Finding tubes" thread above.
I've seen that method beat the electronic "toners"(tools like metal finders they use for finding pipes and wire conduits)! It will definetly find hollow voids between lava layers, but doesn't say how deep it is.
Mabe the military has a darpa project to actually map deep caves! If so they haven't talked about it.
I've seen that method beat the electronic "toners"(tools like metal finders they use for finding pipes and wire conduits)! It will definetly find hollow voids between lava layers, but doesn't say how deep it is.
Mabe the military has a darpa project to actually map deep caves! If so they haven't talked about it.
Gordon J Tilley