This bug is specially dedicated to building cities near hills and mountains, and using the heighten and lower terrain.
I have made some images, and put upon the images some text explaining what terrain type it has, you can try and compare it to how it looks 
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Screenshot 1:
Screenshot 2:
Screenshot 3:
If the world is going to be completely flat with mountains and hills anyways, I would like to see some more accurate definitions of how a mountain looks like in the game files, make it cooperate a bit more with the spells.
Trying to make each tile that looks like a hill into "this" graphic, and modifying the surrounding "connection tiles" to be slopes (the point where the tiles meet) instead of just trying to randomly lower and raise stuff, cause that doesn't work 
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Edit: numbered the screenshots for reference.
Sincerely
~ Kongdej
