Wonderful Bulldozer Pushing Filling The Soil In New Update 95% Work By Dump Truck Unloading Dirt 

I know im 3 months late, but to answer your question, that nasty swamp gets covered/buried, the now top soil acts like a sponge and absorbs the nastiness. They'll keep filling in until its really compact to make a new ground fit for construction. (Maybe, just my guess 😅😂)

​@@KFO-bs3qj Sure! I think a nine story building should be fine on that...

Thanks 😊

DJI air2s

⬆️ with dozer sound when it's standing still. Very poor editing!