Chichontepec volcano, also known as San Vicente in Salvador
It is a paired stratovolcano hence name "two breasts".
The eruptive history of San Vicente volcano is not well known.
There is no definitive record of historical eruptive activity.
The last significant eruption occurred more than 1,700 years
ago.
It has a very long history of repeated, and sometimes violent,
eruptions,
and at least once a large section of the volcano collapsed
in a massive landslide.
An earthquake in 2001 generated landslides causing deaths,
but reports of an eruption proved inaccurate.
The volcano is composed of remnants of multiple eruptive centers
that have migrated roughly eastward with time.
The stamp below was issued October 11th, 1990.
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