We measured from this spot in above post from this geometric boulder on the river side that during certain times of day looks like an owl head kind of like the bohemian grove owl.... It ended up exactly 137.5 feet and due south 180 degree bearing from it. (50 varas due south) to the small depression and out of place river rock, ... we measured a straight pull, and I have a compass my brother (geological engineer) gave me that just measures inclination and I calculated the straight distance pull from it from good old trigonometry.
Anyways, I dug down a couple feet on the depression with the small rock on it a few years ago, an found a rock shaped like a common brick, about same size as well. No hit beforehand on the 1 meter coil, but I don't feel it would get enough depth...but haven't tried the big coil....how would you proceed? You can see the geometric boulder on the very far right bottom of the aura pic as well.