Based on maps and data from the following:
Online Map Creation, online [http://www.aquarius.geomar.de/omc/]; Altiplano-Puna Volcanic Complex (APVC), on line [http://volcano.indstate.edu/cvz/apvc.html]; National Imagery and Mapping Agency, on line.

© 2001 by Wm. Robert Johnston.
Last modified 26 April 2001.
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