"This is the sacred area dedicated to Demeter and Persephone the Chthonic or underground goddesses: there are two sacrificial alters, one of which is circular, with a holy well in the middle, and the other square."
These tracks were made by the wheels of the wagons hauling their cargo of stone up to the ridge during the construction of the temples in the Valley of the Gods c.520-420 BCE.
Yours truly baking in the Sicilian sun with Concordia holding its own behind me.