The dome is the housing for Sat Communications systems.
The building itself is elevator system where the shaft can be used to run power cables.
I don't think the tunnels have been completely back filled, capped yes but not back filled as indicated by Q.
All those CTV screens were probably reversed hacking.
The deed has never been shown of pedo island, top soil maybe deeded but 4' below maybe the rights of the US. (legal loop hold favorable to US DOD).
Disinfo is……?
The back fill of tunnels was a ruse as well as phones were brought in. Somewhere, somehow probable cause was established and the island has been eyeballed ever since.