The size of the dam structure is both a blessing and a curse.
It acts as the main anchor for the map, it’s visible almost straight after the player has left the safe room and is with them until their rescue. A structure this size, however, does cause some optimisation issues. Any extra brush work that wasn’t displacements or physics was converted to a func_brush. If func_brush and props are disabled before compile, this map is still playable but represents something from the ‘doom’ era of gaming.