The old Turks would be great at tunneling. So they would bury their gold underground in tunnels eons ago. In Jordan, This was so common that you were likely to find gold during construction projects or while digging in your backyard. So if a worker found gold, he would be required to hand it over. So he wouldn't dig it out during the day. Only at night. Helicopters would roam around at night specifically to find diggers at night with their lanterns and lamps looking for gold.