Mines

All GU rooms have been mapped, yellow dot is GU Chest. Key location is indicated. The Green lines represent the possible areas where the Shop door can appear. Although expensive it is worth checking for the one of a kind items you can find there.

The Yellow lines represent the areas that the Gold Room door can appear. Coordinates are given, Horizontal, Vertical as they appear when you Right Click on the ground in Astonia. The darker gray area at the rear of the mines are where you will encounter Gold Golems, they are somewhat tougher than their silver equivalents. Do be careful in that rear section. A Recall Scroll is strongly recommended when mining as digging out to the entrance can be long and tedious. Lagging out however is safe in mines as Golems do not respawn except in the main corridor.

The little Ruby Red Dot at 190,250 in mines 10 is of course Ruby. Please bring her a Torch she will be most appreciative.

GU Room Respawn
According to February 2017 Patch Notes
 * 10-40: 10 days
 * 50-80: 20 days
 * 90-120: 30 days