The slave master does not have the gate key. Read your new quest log, and you'll see you now have to kill a demon. The quarry for the stone bricks is north east of the quest giver. Seriously, Open your map and look at the giant Cabal Alz orange X. Now go to it and pick up bricks.Sometimes, a demon will spawn when you pick up a brick. This does not happen every time. I went through four characters before my fifth finally had it spawn for me.Off Each races main city there is a 20-30 zone. For Cimmerians it's Conall's Valley, for Khemi there's Khopshef Province, and for Old Tar Tania it's Wild Lands of Zeltia. Old Tar Tania is also a hub to get to any of these other Cities.Areas, if you start in Conarch Village you can take the stagecoach to Old Tartania right near the Tort-age smuggler right where you zone in from Tort-age. Also, if you are not of the race to which homeland zone you travel to, usually there is a place to bind.