Get pictureboxes location and write down to document

Hi!

Im trying to make a kind of game. And as you see at the image here:

There are a few umm... "trees", the thing is that i want all their locations writen down in a document.

How can i get just their location values and not the... castle for example. I tried to use the "For Each" method but i dont really know that method so much. How am i going to do?

Greeting, Carl Andersson-