The earth is rude, silent, incomprehensible at first, Nature is rude and incomprehensible at first, Be not discouraged, keep on, there are divine things well envelop’d, I swear to you there are divine things more beautiful than words can tell. — “Song of the Open Road”

Photo: 21. Basal surge and nonwelded rhyolitic Nelson Mountain Tuff (unit Tnn) overlies reworked tuff (from Mineral Mountain Rhyolite?; west margin of Stewart Peak quad). Note geologist (lower right) for scale.
Photograph by P.W. Lipman. USGS