U. S. GEOLOGICAL SURVEY 



BULLETIN 612 PLATE XXH 



A. "STEAMBOAT ROCK.'" IN ECHO CANYON, UTAH. 



Name is applied to rock mass In foreground because seen at some angles it resembles the bow of a steamship. 



It consists of red conglomerate of Tertiary age. 



B. THE NARROWS. IN ECHO CANYON. UTAH. 



Fortifications were constructed by the Mormons in these narrows during the so-called Mormon war of 1857 



The walls are composed of coarse red conglomerate of the Wasatch group. 



