[quote=bearishgurl]uco, this area was notorious in prior decades for having buried ordinance of WWII-era military shells and artillery found (even AFTER residential development) and is just south of the now-defunct “Camp Elliot.” Perhaps a new “spec builder” is taking every precaution and shaving the land prior to laying foundations.
Just my (somewhat “educated”) guess to explain these photos.[/quote] Considering the vertical shaft.. I don’t think so. One of these looks like a tunnel entrance. I think you may have only looked at the first link without zooming in.. When you first select the link, it looks like the area has just been ‘cleared’.. zoom in one step and all of a sudden you see a large gaping square shaft. I suspect Google is using two image sources. The one that just shows a flat area is older than the one that shows the shaft.. which is more recent. The thing must have been constructed within the past year or so.
The thing on the trailer on the bottom edge of the cleared out area is a high power portable generator.. somewhere around 250KW or more (250KW is the bottom end for that size )