Mountain pass
Route through a mountain range or over a ridge / From Wikipedia, the free encyclopedia
For the mine, see Mountain Pass mine. For the town, see Mountain Pass, California.
A mountain pass is a navigable route through a mountain range or over a ridge. Since mountain ranges can present formidable barriers to travel, passes have played a key role in trade, war, and both human and animal migration throughout history. At lower elevations it may be called a hill pass. A mountain pass is typically formed between two volcanic peaks or created by erosion from water or wind.