Niobrara l.s. and Benton shale on basal slope of gulch wall, backed by what resembles Dakota sandstone. Back of this are variegated shales, with probable l.s. like Morrison, all underlaid by red beds as east of the range. Far north is a different formation. Niobrara where we photographed it has 70¡ dip SW, strike NW, overlaid by "paper" shales as at Six Mile N of Boulder. The conglomerate over the edges of these formations contains granite, gneiss and red and white s.s. boulders up to 18 inch diameter, quite hard. Mancos shales extend up on slope of south wall, capped by Mesa Verde. At top of Benton in one place I found a shaly sandstone containing plant stems as north of Boulder. Where Elk Creek breaks through the "Dakota" we left it and kept on west by north. Here the Dakota extends to base of
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