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Nuevo Mundo
"The Nuevo Mundo silicic lava dome and flow complex between Potosí and Uyuni in Bolivia is capped by pumice cones. Two viscous dacitic lava flows were erupted along a N-S fault and were associated with block-and-ash flows to the east. A later plinian explosive eruption produced an airfall-tephra deposit that extends as far as the renowned Bolivian mining center of Potosí, 200 km to the east. Nuevo Mundo was considered to be of late Pleistocene or Holocene age (de Silva, 2007 pers. comm.) and is the youngest volcanic center center of the vast Los Frailes ignimbrite plateau in the eastern Cordillera of Bolivia."  -Smithsonian Volcano Archive
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