Riven - Puzzle Game - 14

Riven is a point and click puzzle game by Cyan Worlds and the sequel to Myst. It was released in 1997 (on five CDs!) and takes place after the events of Myst. Atrus sends the player to Riven in order to free his wife, Catherine, from Gehn.

Get it on Steam:
But run it with ScummVM:

[Antiwindowscatalog]

Oh wow I feel like you're so close to figuring this last one out.
[Let's see if I can hide a small spoiler under the Read More link...]




...you keep going to that room that shows the relief maps. Notice what features show up on the relief maps and what features do not?