There are some weird areas on this map (which I assume is new as it downloaded). It's probably not important as the area(s) are isolated, but an example is near the river SW of Prokhorovka. There appears to be a kind of Mangrove swamp, except with pine trees. You can drive a tank through some parts of this swap (the ground all looks like water) but not others. Perhaps it comes from making the water very shallow??
Also, what do the red dots on the CBM signify?