A HellPit is a spring of green ectoplasmic goo that spring forth from the bowels of the astreal to the materail realm in out of the way places. These points of concentrated Evil and Chaos create dangers untold in regions around them.
A Woodsman Blade is a useful tool for those who ply the woods. It is often the primary weapon for a variety of Woodsman Organization.
The Dark Oak Forest is a place of darkness, danger, and Evil. For reasons best not talked about, the Dark One has visited this place, twisting it forever.
This is the order of the Three Kingdoms, each kingdom volunteering men to serve in the Order. Each of the members must be an expert woodsman: able to survive in the Great Dark Oak Forest that borders all three Kingdoms.
A common mistake when writing adventures set in deserts is to assume that the climate is too ferociously hot to wear armor. Historically, most battles in deserts involved troops dressed in protective armor. Although they would have been miserable during the hottest part of the day or the hottest part of the year, desert weather isn't intolerably hot 24/7.