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Summary
DescriptionPhonolite.webm
English: Video of phonolites on Cerro de la Campana, in Hermosillo, Sonora (Mexico). Cerro de la Campana (Bell Hill) owes its name to the metallic sounding rocks that can be found there.
Español: Video de fonolitas en el Cerro de la Campana, en Hermosillo, Sonora (México). El Cerro de la Campana debe su nombre a estas rocas que resuenan a metal y que se encuentran ahí.
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