Sophisticated? A redneck with a track hoe and three Mexican block masons could do the basic construction of the underground hole in a day. A welder and a helper, a hydraulics guy and a electrician could do the lid on day two.
What is that redneck doing there, and how’d he bring a track hoe in? And what about those Mexicans? Has the US economy got so bad that they snuck into Ghaza to find work? Damn. The world is getting way too sophisticated for my taste.