Yes I do know that and thats why I said ancient Carthage because of the tempertature rising, and as you know a few thousend years ago Sahara wasnt even a desert, but with times its getting warmer and drier, but still you have to remember Cyprus is an island in middle of the sea and a bit further from the main land Africa while Umbar isnt on an island which makes me think the climate will be more like Carthage in the ancient times as I said before. Your again some what wrong about Turks because they are usually called Sultans not Caliphs. And about how the city should like yes you got me right though I still would say in the second part which will have more Gondorian ruins, we will also see habited Haradrim houses, every now and then, though they wont be as dense as they are in the city center. In this part we should have the fortress too. Then slowly we should have a transition to the last part with more Numenorean ruins, a few Gondorian ones and here well have very few farms and houses for Hardrim. Outside this there will be more and more houses and less and less ruins, at some point well see ruins of the ancient city walls. Though there will be a few withered ruins outside those too but farms would dominate. Population will surly be less than half the original, yes. The intresting thing with Tolkiens works is that civilizations and events and everything is just much larger and advanced and great but the times are longer too and these two somewhat balance eachother. For example if we replaced Numenor with Rome way less would have remaind of it because of the long time but if we replaced Rome with Numenor then a lot more would have remaind, so these two balance eachother. The ruins will be as much withered as they are seen in places like Rome, Persepolis, Istanbul, Egypt, etc because even though the time passed is longer the civilization who built them was more advancend and thus the buildings were more strong. And during Numenorean times they could have brought wood from anywhere because how advanced they were and how much land they ruled over even though as I said trees could grow in Carthages geography but during Haradrims time, if they didnt want to use the wood from places around Umbar they could import from Far Harad, because they are amazing sailors and also there were many more places in the way to Umbar to rest in and they didnt need to even go far from the coast because its just the same coast. Also they could have just built their ships somewhere in the south then bring them to Umbar even though its not needed and they could just grow and cut trees in Umbar for just making ships and then they would plant more, then cut and so on.