here is the update of the groom lake area 51 base. included are a fairly detailed hangar 18 complex. hangar 18 is the largest in area 51, eight stories high. it is also the hangar about which much speculation and a sci-fi movie were based. the water tower in thhw last version of which i was very fond has been replaced with one seen in photos taken from freedom ridge (about 12 miles away) in1995. the geometry was adjusted to make the base more in line with these panoramas.....doc