Initially seen after entering the Silverite Mine, the Architect's Lab is located north of where the Warden wakes up, just past a darkspawn patrol. There are two ways in, each leading to a different level. The upper level is accessed by killing the darkspawn jailor and taking the key to the door. The door leading to the pit is locked. To unlock it, you must solve a puzzle on the upper floor, turning off the gas and opening the warded door (see Special objects below).