Head to Mine Shaft #2716 and check the Shaft Entrance for a cutscene.
Note: From North Gustaberg K-6, zone into Oldton Movalpolos E-13 where you will find Twinkbrix. Trade him a Snow Lily or play his dice game to earn a warp into Mine Shaft #2716.
(To play the dice game, you can trade him 1-10,000 gil. He will roll two 50-sided dice that must add up to a number between 2 and X, which is determined by how much gil you traded him. Once you win, trade him 2,000 gil)
Head to Metalworks and talk to Cid at H-8 for a cutscene.
Wait one Vana'diel day and talk to Cid again for a second cutscene.
Game Description
Mission Orders
Travel to the Moblin city of Movalpolos to find a path to the fifth and final mothercrystal.