Koretin is surrounded by hills. Once there was a lake in the delta plain. The old foundations relics have been found by today´s excavations or agriculture activities in the hills. As the lake flowed away at the canyon in Koncul, the delta plane first developed in to a fertile agricultural area. The only thing that has still remained today from this lake, is the stream called Lumi Morava, which flows into the Danube. The delta plane is partially built over with dispersed building objects and the agriculture activities are occurring even today, which supply the whole country and partly Europe with fruit and fruit trees.