| We turned our faces to the north, and followed along the base of the Black Hills, about four miles distant, crossing the hills and hollows formed by the drains coming from them... . On our right, about two miles distant, stretched a high table ridge or plateau, rising one hundred fifty or two hundred feet, its western escarpments abrupt, nearly vertical ... . Between this plateau on our right and the Black Hills on our left, there is a marked depression or valley, averaging about four miles in width and which appears to have been cut out by the violent action of an immense body of water flowing in a northern direction. ... The depression thus formed is called the "Cheyenne Pass," from the constant use made of it by that tribe in their migrations to and from the Platte. (Stansbury) |
