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| Nice volcanic breccia under East Flange Rock. The Mehrten Fmt is Miocene-Pliocene in age (~10 million to ~5 million years old). |
| Keywords: East Flange Emigrant Wilderness Hikes Lower Relief Valley |
| Total images: 38 | Last update: 6/22/09 10:55 AM | copyright MrHollister.com 2009 | Help |