Hills

This type of terrain has much more to do with topography than with ecology. A forest can be hilly, as can a desert (even a sandy desert, if you consider the dunes to be hills). Hills can be gently rolling mounds or craggy, mountainlike piles of rock and earth that jut out of the surrounding landscape. For purposes of classifying a certain area that includes hilly ter- rain, the Dungeon Master can use the following guidelines: Any irregular (not level) terrain that includes dense or moderate tree cover is forest. An area of gently rolling hills at an elevation of less than 2,000 feet containing few or no trees is classified as some type of terrain other than hills; use whichever designation (desert, plains, swamp, or seacoast) is appropriate. An area is classified as hills if it is generally at an eleva- tion of less than 2,000 feet, contains few or no trees, and has sharply sloping mounds with peaks that may rise above 2,000 feet. Or, an area is classified as hills if it is at an elevation of between 2,000 and 4,000 feet, generally contains irregular terrain. and has few or no trees.