I thought owl and heart as well. There is a road, and you need a 4WD to get back there. Sometimes the spring overflows and washes it out. I am sure that has been going on for at least 200 years. Eventually the road will be impassable.
So after the diamond and other significant rocks (one of those rocks had a gold bead embedded in it), the next rock is a dog sitting there watching you as you go by. Then there is nothing (that I know of yet) for about a quarter mile. Then you come upon this site that is a textbook example of what is described in De Re Metallica as the perfect site to look for gold....spring, cleft trees with orange and yellow with black holes in the leaves, etc., sparse trees and vegetation, etc. Then at what I suspect was the actual mine site there was an effort to conceal the area - with lots of non-native trees - and outcropping of rocks from being seen from the road. My dowsing rods told me to go over there, and I found this. He's got a flat head just like the turtle head poking out near the diamond rock:
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This is a boulder, about the size of a VW Bug. Since his head is extended and his eye is open I presume he is saying to keep going. This will lead you up and to the top of the outcropping.
I will not be trying to set off or find a way into that death trap. It must be pretty sturdy because it did survive a small earthquake. I have reason to suspect there are explosives in that mix somewhere based on something that's carved onto the diamond rock, and I suspect it is being watched because someone keeps small branches cut back along the outcrop, which may be for hunting purposes as well. Anyhow I'm sure the trap is deadly, and I don't need to get myself killed. But this is an excellent opportunity to reverse engineer and learn, and it's fun.
Others can learn from it as well. And there may be small side caches that are not trapped.