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
If things keep going on course the way they have been here, those drill holes will be labeled as "natural" in a few years. But in my opinion, they sure seemed to like that boulder for something. Looks kinda like an upsidedown heart. Try going up above, they put markers down by the waterways and trails along the canyon bottoms where you leave them on maps and go uphill.