Think about it. Plenty of open space to practice duelling and an area only Harry could access using parseltongue. Umbridge would have been none the wiser.…
It makes no sense otherwise. Why would the mirror in the first book been accessible to harry, even more since it's SO dangerous. Why would every trail there be exactly with puzzles that harry and friends had possibilty to solve.…
In chapter 7 of Philosophers Stone, Dumbledore gets up to ‘say a few words’. Those words are: Nitwit, Blubber, Odmont, Tweak. I’ve always wondered - do those words have any meaning.…