I have much sympathy for the families of these people, but at what point are the responsible for their own well-being. You don't have to be all that smart to understand that a trip into the Colorado or New Mexico backcountry can be very hazardous. I fail to see how this is different than a mountain climber dying on Long's Peak or a backcountry skier getting caught in an avalanche. I suspect that you are a little blinded because it's about a treasure hunt instead of a traditional sporting pursuit.