I think that is just stuff which sucks up the capacities of the cpu...
...No. I mean you can take a spade and lower the land (while gaining a nice large pile of dirt), or while holding the spade and using the large pile of dirt in your inventory you'll raise the land. At your current location. You can terraform the whole island, building canals and stuff. It's pretty fun. Takes a long time though, and only does a bit at a time. Very small values.