Industrial Concrete  underground Holding Tank which can be used for any scale train or vehicle cargo load, in a diorama, or model scene.  Ships in 2 pieces c/w 2 stacks.  One stack for access into tank and the other is for discharge into honey wagon. Upper half has holes for stacks and a side hole for underground waste line.  Measures approx 1 7/8" dia x 2" plus stacks.