If you lurk around some of the satanically inclined sites you will see people with handles like "Hvtr" or "Hvitr (insert name here)" . They are around and real.
could be some reference to 4 princes of hell, the indianapolis city flag, or something completely different.
Looks to me like quite alot going on there. Agree that the temple is box with dome…. nice paint job. Would be a good place for communications hut and antennas. Did anybody run math on available power by the generators? Available power versus visible and probable load might give you an indication as to what may be going on inside or down below. I hate math.