Most of this stuff is explained on tours to the NTS which I took last July. The structures and cables in the craters are to measure the effects of
radioactive material and it's movement below the surface. Many of the tests took place below the water table and since it all drains down into the
salt flats at the bottom of the valley they want to make sure the material in contained in the vitrified stone. Some of the water you are seeing is
actually from the underground water source pushed up to the surface after the explosions.
Stuff like the Pyramids were to test out bunker designs to find the best one to deal with blast waves, it's better to go underground but above ground
command structures deal with them better in that configuration. There seem to be a few other structures underground you are showing as well.
There are also structures near the blast sites they used for final device assembly which are in some of those pictures. Usually earthen berm types
which are typical for munition storage.
The area where the plane is I believe is the area that's dedicated to training emergency response teams to deal with radioactivity. There are a couple
of containers on site and one of them on top of the hill has a small radioactive area they use to teach the personnel to detect it.
If you sign up for the tour they will drive you past all of those areas and explain them and you will see the two truck trailers and all of the cables
to them rotting away.
The base is still active in training, storing of waste and in more modern things like testing the effects of chemical spills in one area and doing
future work on back scatter radiation and other border control related tech. Also ensuring stockpile validity by taking material right up to the point
of critical.
Also if you take the tour you will likely see a couple of predators out flying since Creech there home base is right next door. The tour guide we had
basically ran the show for a long time even helping the groom lake facility find there own water supply and telling us many cool stories.
There were only a few off limits areas that were explained well enough why, but the ones that weren't arent shown in your pics and I think they may be
doing work on recycling nuclear waste and other future tech there.
edit on 12-3-2012 by circuitsports because: (no reason given)
BTW that's not a flying saucer shadow in the pic they also do munitions testing out there, bombs ect.
edit on 12-3-2012 by circuitsports
because: (no reason given)