Information on dungeons and other places of mystery to risk your life while adventuring in.

The location is independent of the environment.
The location is an arid area with little to no water. This area could be rocky or sandy, hot or cold, low or high altitude, as long as it is dry. Examples are the Gobi Desert or the Sahara.
Forest/ Jungle        
The location is amongst standing plants, like trees. Examples would be The California Redwood Forests, the Brazilian Rain Forests, or the Rhine Valley.
The location is a rocky higher altitude environment. The Himalayas, The Andes, The Rockies are all good examples of mountains. This category also includes foothills and other related terrains.
The plot occurs in an odd environment that does not fit into any of the other categories. Please look over the category again and make sure it does not fit in any of the existing categories. Make sure to CAREFULLY explain the environment in the description text.
The location is a broad flat space, which may or may not be rocky, grass covered, or have low shrubs. The African Serengeti, the American Great Plains, or the Mongolian Steppes, are all plains.
The location is in a mixture of land and water, usually teeming with life of all kinds. This category covers river deltas, ocean estuaries, bogs, or any place where land, water, and plants intersect. The Mangrove Swamps, the Nile Delta, and the Lousiana Bayou, are all examples of Swamps.
Tundra/ Arctic        
The plot occurs lives in a terrain that is covered in ice, snow, or glacier, most of the years. This includes The Arctic, The Northern Canadian Territories, and the Siberian region of Eurasia.
The plot occurs in and around caves (spaces in rocks, usually underground) and in other underground spaces (in the soil, in the rock, or in underground rivers). Carlsbad caverns and Luray caves in the Us, and Lascaux cave in France are all examples of the Cave Underground environment.
The location is in the water, be it a stream, river, pond, lake, ocean, or some other body and form. This includes on ships and other water craft.
Various doors (secret and otherwise), entrances, and their locks and traps.
Things that exist in a dungeon or ruin (flora, fauna, and other things) and the dungeon environment itself.
Various fiendish puzzles that must be solved in a dungeon
Rooms/ Halls        
Descriptions and set ups
Types/ styles of dungeons
Things surprise and effect characters.