I am running a "House Rules" version Rolemaster. So this forest adventure will have plenty of opportunities to use skills. I think that characters with region lore skills can have a rough personal "mind's eye" map of the area but I don't like the idea of plonking down a fully detailed map, unless the characters actually have the map, no matter what their skills might be. So I think I will make the two characters with some knowledge of the area maps that reflect their personal understanding of the place.