Well in the history of currency animal dung was used to exchange for items. That's why I said "the amber" looked like "cat shit" in there's lots of cat shit in my backyard now.
I hate to say it but these pictures don't mean much. It shows some Amber in dirt and in bags. This amber could have been purchased and strewn about into a dirt hole, or it could have come directly from black market sources which is where much of amber comes from. Id like to see pictures of an actual mining operation.. where you can actually tell the surroundings etc.
I agree with you if its really a "mining facility" we would see workers with picks, carts and trucks with amber.
Not a hand full of dirt with pieces of shit and a paper written "Amber Coin". I can even pull that on off in my backyard by shaping cat shit into amber.