Inside the game, the mage Avatar needed almost 2 days to reach the core area. Well this time he wasn't just focusing on the core area, because of this he needed that much time to reach that area. While going toward the core area he also observed the surrounding area and because of this it took him that much time.
Unfortunately even though he observed all that surrounding area he did not find any type of abnormality in that place. He could have found something if he decided to find those places more clearly but then his main focus was only the core area, and the City had not already told him that he would send a search team in those areas to search around that place.
Now came back to the present matter,