His mindscape came into view and I was immediately hit with a wall. It was a simple wall, one any novice Occlumens would create as a starter. There were many ways to get through it, but the best was to look for the small keyhole. That would create an opening into the wall. A quick look around saw that the fake grass around the wall had slightly raised ground to my right. It was hidden quite well, but easily detectable to me. Closer inspection showed it was a hole. Peering into said hole, I saw the key and several traps that would trigger if I were to go for the key. 