Route 227 ascends the slope of Stark Mountain. It undulates and has a volcanic theme to it.
There is only one way to get across the valley and that is across a narrow bridge. Two bridges.
The caves have a lava effect on the walls in the DS game. To try and replicate it the walls were veneered with lit redstone ore using MCEdit. The game world was loaded up properly in Minecraft. After a minute, about half the lit redstone ore became unlit. The rest of the lit redstone ore was replaced with stone.
The second room is over 100 blocks north-south. It takes Stark Mountain to a point on the map further north than Snowpoint City.
This room has its own valleys and hills.
The same redstone ore procedure was used here.
The last room. In the DS game it is where you can catch the legendary Pokemon Heatran.
The last room is absolutely tiny.
Approaching Route 227.
The twin bridges.
Entrance to Stark Mountain.
The first room.
The second, massive room.
The last room.
Progress so far.