S.hiker,I enlarged your photo #155,looks like their might be a squared opening on the cliff face{r.side},so maybe their is a other entrance below/or above.Sure you thought of it.
Yes, there are a number of openings at the back of the crevice.
Should be interesting to see what it's about, once I can get past the brush and all the way up there for a closer look.
This shot is looking down at a lower opening......
One thing is for sure . EC never did the measurements from the saguaro in the Needle Canyon . For unknow reasons , he was confused and " saw " another saguaro from another place .
Maybe he had put in his mind as priority the LDM and started from there to search for the nearest marked saguaro .
Garrett atx pi 12+20inch coil, Garrett mh series, Garrett 2500+t-hound attchmnt, fisher tw-6 two box, Pulsestar pro ii with various coils up to 98 inches, pulsemaster pro w/1.2 m coil
Which mine is this? Anyone ever just look for tailings/out of place talus slopes. You can see the needle in the background upper left, it fits some of the maps and has a trail you can see going to it even on google earth. A bit of a hike up the ridge and back down in your hot weather though. Anyone explored this location much?
Garrett atx pi 12+20inch coil, Garrett mh series, Garrett 2500+t-hound attchmnt, fisher tw-6 two box, Pulsestar pro ii with various coils up to 98 inches, pulsemaster pro w/1.2 m coil