My Dad was in the Army Corps of Engineers in WWII and spent a lot of time in the Pacific, mostly in the Philipines. He told the story of building a road under fire and the dozer got stuck. They couldn't get it out before nightfall and pulled back to the lines, (Seabees weren't the only construction battalion that worked during combact the Army had Combat Engineering as well.) Anyway, at dawn the next morning they went back to rescue the dozer and all that was showing was a little bit of the exhaust pipe so they just put fill right over it. Almost certainly, it's still there.