In several places on the maps, mostly along roadsides, you have to find some short stairs to be able to access the layered grass areas. I have mostly been able to get onto all those in Aleroth, but in the Dark Forest I can't seem to find a way up onto them. If I look at the area maps, the swampy areas remain blacked out and also quite a bit of the layered grass areas. The best I seem to be able to do is sort of run along side them and then the blacked out part of the map clears a bit, but there are herbs and mushrooms further in that I can't get to. I noticed some movable "boulders" around the areas and placed them next to the edge thinking I could step up onto one, but that didn't work either. Is there some secret to getting into those areas?