University of Texas Press
  • Sulphur Mining on Mexico’s Popocatépetl Volcano (1820–1920): Origins, Development, and Human-Environmental Challenges
Figure 4. Azufreros and travelers gathering at Tlamacas. (Source: )
Figure 4.

Azufreros and travelers gathering at Tlamacas.

(Source: Popocatépetl Company 1904)

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