The description that is shown when entering the Northern Gloom Forest (next to Dapplegreen) includes these words:
"tall corn and barley grow wild..."
"apple and peach trees tempt, with huge ripe fruits..."
and yet there are no fruits or grains able to be harvested in this area. If this is intentional, then the description should be changed. If not, perhaps add some grains and fruits?
Also, if my memory serves me, when I explored through the crack or door into the castle, there was no warning that it was so thin I wouldnt be able to return that way. I did see this warning in another dungeon area. I think a "proceed at your risk" type of warning would be helpful for that entrance to the castle.