Cliffs capped with gravel 500-600' high at 9,300 [feet]. Above Angosto.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Lava dam, baked s.s.s rubble under lava, normal s.s., columnar structure and river.Expedition to Cen...
Looking down La Paya Valley, from 14,780 [feet].Expedition to Central AndesGrayscaleBowman nitrate n...
Looking west, from 15,150 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
Cliffs with overthrust.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Cliffs of ? Congl. Volc. 13,270 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, ...
S.S. fill - indurated in canyon floor of older rock.Expedition to Central AndesGrayscaleBowman nitra...
Rio de la Poma (?) at Angosto.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Mt. slopes at 1,000 [feet]. Not yet dissected.Expedition to Central AndesGrayscaleBowman nitrate neg...
Cattle crosing at 13,800 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
Looking W x S up Escoipe ravine toward flat-topped spurs.Expedition to Central AndesGrayscaleBowman ...
Terraces made by grass. 15,000 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, b...
12,600 [feet] looking s.e.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Smooth slopes, 16,400 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
From quebrada near Catua. 13,050'.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Looking n.w. from 15,150 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
Lava dam, baked s.s.s rubble under lava, normal s.s., columnar structure and river.Expedition to Cen...
Looking down La Paya Valley, from 14,780 [feet].Expedition to Central AndesGrayscaleBowman nitrate n...
Looking west, from 15,150 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
Cliffs with overthrust.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Cliffs of ? Congl. Volc. 13,270 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, ...
S.S. fill - indurated in canyon floor of older rock.Expedition to Central AndesGrayscaleBowman nitra...
Rio de la Poma (?) at Angosto.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Mt. slopes at 1,000 [feet]. Not yet dissected.Expedition to Central AndesGrayscaleBowman nitrate neg...
Cattle crosing at 13,800 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
Looking W x S up Escoipe ravine toward flat-topped spurs.Expedition to Central AndesGrayscaleBowman ...
Terraces made by grass. 15,000 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, b...
12,600 [feet] looking s.e.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Smooth slopes, 16,400 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
From quebrada near Catua. 13,050'.Expedition to Central AndesGrayscaleBowman nitrate negative, box
Looking n.w. from 15,150 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box
Lava dam, baked s.s.s rubble under lava, normal s.s., columnar structure and river.Expedition to Cen...
Looking down La Paya Valley, from 14,780 [feet].Expedition to Central AndesGrayscaleBowman nitrate n...
Looking west, from 15,150 [feet].Expedition to Central AndesGrayscaleBowman nitrate negative, box