BULL. GEOL. SOC. AM. 



VOL. 19, 1907, PL. 4 



FiGrnE 1. — HrLL of white .Tur.vssic Sa.xd.stoxe. Dry V.i.LLEY, Ut.\h 

 Shows characteristic wind-sculptured forms of the region. Photograph b.v Cross, 190.5 



Fiiii'in: 



-LooKixG-rii.-vs.s Rock, Duv ^■ALI,^;Y, IJr.vii 



A i-('iniiant of wliite .Jurassic sandstone with n h\rge alcove wliicli penetrates the rearwali. The size 

 of the opening indicated b.v the figures of two men. I'liotograpli byCidSS, 1005 



WIND EROSION IN THE PLATEAU COUNTRY 



