these are incredible. the upper right section, outside the wall. my guess is the baby volcano thing is the old roman amphitheater... but try as i might, i cannot figure out what that also-probably-roman and very long structure is to its left (northeast of the amphitheater, east of the city). by the 1400s the structure seems to be gone and all that remains is a depression converted into farm land.
it's massive... some kind of old colosseum for like chariot racing?