The Mining Fields are the areas outside the map that you are able to place blocks and mine
Well how do I Mine and get Resources?
On this server every Citadel has a mine you can use. The mines will teleport you to the edge of the world, beyond the bedrock wall created my Morlock. Out here it is a waste land, all life is gone and only stone and rock remain.
This land is scarred from the ancient war of Morlock and the Archedonians. In the war Morlock used powerful magic, ripping the world apart and raising the dead. He moved the land and now much of it is misshapen and it looks as if the world doesn't even go together anymore. This power made the world out here weak and dangerous, even today, 300 years later. There are huge walls, ravines, and cracks in the mining fields. You are free to explore this war stricken land.
Out here you can dig, mine, and find resources. Spend some time out here to get a few pairs of iron armor and load up on gold and ore. You can always come back and mine, just remember to bring a ton of picks, food, and torches.
After a certain time period the Mining Fields will be replenished, bringing back all the ores and loot. So don't worry, this realm will always have resources for you to mine.
Be careful, remember you are still in a war and you may run into other team's caves and mines. Just be ready for a bloody fight . . .