fig.5.Schematic drawing showing the proposed proto-grand canyon in laramide time.black arrows show the direction of proposed flow.red words denote the level to which this paleocanyon incised.the barbed tributaries are those off both the east and west sides of the kaibab arch that are obtuse to the direction of today's drainage.UGG=Upper granite gorge, H-MW =hindu-milkweed canyon, DC=diamond creek. monocline after huntoon et al.(1996)