ocr: 192 TIIE NATIONAL, GEOGRAPHIC MAGAZINE Plntrerap courtrsy U.S Faret Serrice THE "CITOSTS" OF THE RIO GRANDE NATIONAL, POHLEST These unique products of eprth sculpture in the Whecler Natiotaal Mlinument, which is embraced in the Rio Grande Natimal Forest, cunvey some idea of the tricks the wind and the mountuins water and play, hills when low they (nce tumn text, aside page. frum 93). their routite tank oi "exalting" valleys and laying away in tritmph, little dreaming that in minder of its once greater self, Lake its own time it Wils destined itself to be Agassiz, which covered 110,000 square b ...
