In a strange kind of way, it is kind of efficient how they have busted up those pesky old ruins to build up the railway line supporting wall. Or were all those 'pebbles' just lying around?
I once visited the olive grove on the island of Milos, where they found the Venus de Milo, literally just under the soil in the grove. I am sure I have one of her arms lying around under the house her somewhere. But don't tell anyone.