In mad max fury road was shown this place to be the richest place in the universe like the ali baba cave where the lunar boss/queen furiosa lured the ancient king and his military forces away from his kingdom to go fight a war far away so she can rush to it while it's defenseless and take it over or pillage it and escape before the ancient king returns.

But like the thieves in ali baba cave got trapped here and now are planning how to escape with most of earth's riches when the ancient king/god of earth etc returns and has to open the gate of the cave like cyclops/ali baba etc in order to come here.