Four hectares is a little under 10 acres. A perimeter of 300 meters makes it a little under two modern city blocks. A nice fortress, but not a huge city, even 4 thousand years ago. Babylonian Ur was 54 acres.
Looking up the location on google maps has me scratching my head. It's not near a river or sea, as most cities tend to be.
So, what was the quarry? Pretty big investment in fortress stuff for the time ~ so they must have been piling up trade goods to move East to more urban markets, and, at the same time, keeping the hunters and farmers out of their storehouses ~ maybe doing slaves as well. Blond buxomy huntress types~! In an age of very high maternal death rates brought about by particularly abominable indoor housing conditions, they'd been a serious item.
Early cities were on trade routes and near a water supply. There was a lot of overland trade, then as now. The great civilizations we know most about arose in major river basins, where irrigation was simple to implement and agricultural surplus was consistent, leading to large standing armies, recordkeeping for tracking of food production and property boundaries — recordkeeping in its turn led to writing systems — and a larger population in better health that had to occupy itself with other business (or in the case of Egypt and Mesopotamia, in large cultic building projects).
One of the “Atlantis was really here” groups have found a coastal civilization in Iberia which may have been wiped by a tsunami, an event that is bound to have happened more than once.