 Once the caravan arrived, they set up their sawmill and used the lumber to build bunkhouses, stables, a machine shop, warehouses, a hospital, a restaurant, a saloon, a steam plant, and the station house.The construction camp was called Tunnel City and from 1886 to 1888 it housed over 200 construction workers who were building switchbacks and drilling the tunnel.Up the hill towards the Stampede Pass summit, 1,000 Chinese laborers who were also working on the tunnel were encamped.