Gertrude "Trudi" Duby Blom (born Gertrude Elisabeth Lörtscher; July 7, 1901 – December 23, 1993) [1] was a Swiss journalist, social anthropologist, and documentary photographer who spent five decades chronicling the Mayan cultures of Chiapas, Mexico, particularly the culture of the Lacandon Maya. In later life, she also became an environmental activist. Blom's former home Casa Na Bolom is a research and cultural center devoted to the protection and preservation of the Lacandon Maya and La Selva Lacandona rain forest.[2]