"On this volcanic wasteland of sharp rocks, you'll find gold mines that were abandoned by humans a long time ago. Now, only the croaking of the ravens breaks the silence of these ash lands. Build a large colony and exploit its valuable mines to ensure a continuous supply of gold for the Empire. There are many points of entry between the mountains and the mines. You will have to build strong defenses at each entrance to protect the mines."
Stone locates at the south and Iron locates at the north. 20 Iron can be picked up. Each gold mine also contain 500 gold pickup.
The first thing you need to do is push for stone at the south with your starting rangers. The second, of course, is push at the north for iron. You will meet a group of runners there. guard your quarry with your best man until you have stable iron supply.
The north-east gold mine is the easiest one to reach with lowest risk (also comes with a large pocket zone with woods and green lands).