Bo.cky Fountain Trip 
seem to mark the northern terminus of the loner cret. sandstones, 
'which form the floor of the plains to the south, rising gently to 
the north and giving a southern system of drainage, which is one 
of the remarkable features of this region. Cold Springs canon 
and the head of Canon Colorado seem to cut the deepest into this 
northern edge of this southerly inclined tableland. From the head 
of Cold Spring the line of cret. cliffs extend northwest to a 
promontory which is supplemented by a lone butte and thence con¬ 
nects with the western slopes of the Abajo; as the slope of this 
table is southward,the drainage from the northern and northeast¬ 
ern slopes of the Aba jo is turned to the south and by a semicir¬ 
cular canon enters the Canon do I.Iontezuma. In a similar manner 
all the drainage to the east up to the very line of northward 
facing bluff and the brink of Canon D .lores is turned to the 
south into the Canons of nontesuma and Ilovenweep. The Canon of 
Dolores could be traced as far to the north as the point where 
the plateau breaks off to the north. Beyond this the plateau 
region extends to Lone Cone and instead of breaking off\\to the 
north slopes off toward the San liiguel in a manner similar to 
the slope south. Eastward from the Aba jo the streams may be 
seen to enter Canons and can only be followed from this by the 
lines of cliffs, which increase toward the San Juan until the 
canons on account of their great number and width occupy more 
space than the tables or strip of highland between. There seems 
to be a gentle depression extending across the plains from the 
Abajo toward bends of the Dolores in which the shales have been 
preserved in patches and from which the streams enter the shal¬ 
low canons that cut through the gently elevated belt that ruhs 
