This is an amazing post TP and you've really researched this subject well. To think there was a single coffee bean in the centre of it, or attempting to blow the things up, shows that the government intervention was almost divine for preservation reasons. I don't think any of these stones were man-made, and this is a great opportunity to segue to some great theories about all 'natural' rock formations covered by this You Tube Channel. Are mountains really large pieces of natural rock? According to this researcher what we know about rocks and their formations, could all be wrong, but then who knows? I wish I had seen this at the time, but I've resteemed it and given a token vote, awesome work dude as always. https://www.youtube.com/channel/UCSNGpyGctY2K8Gf6ZCatXlw