The first monsters to wander out of a brand new unexplored labyrinth take a top tier tank and a small army to put down. Yea, Ill let someone else be the first to explore that thing.
It's not trees that it towers over but bushes and weeds. The trees are the ones behind it.
Even if it is somehow a strange birds eye view of it, it still should have been invisible to see, since it's inside a forest.
Do you see every hut in a forest when you stand at the forests entrance? Do you see a town on the other side of a forest when you're deep in it? It's the same principle.