Costa Rica's 'Cave of Death': A Natural Wonder That's Not for the Faint of Heart

This small yet deadly cave, located on the edge of the Poas Volcano, has become the subject of horrified fascination on social media.

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Poas ,San Josét ,Costa Rica ,Van Rentergem ,National Library Of Medicine ,Cueva De La Muerte ,Poas Volcano ,Deadly Secret ,National Library ,