María de Lourdes Baez Cubero is a Doctor in Anthropology from the National School of Anthropology and History - INAH. He is a member of the SNI. She currently works as a senior researcher in the Ethnography Branch of the INAH National Museum of Anthropology where she carries out work as curator responsible for the Los Nahuas Hall of the MNA, and the Nahuas Ethnographic Collections. Since 2003, he coordinates the Hidalgo regional research team of the Ethnography of indigenous regions in the new millennium project, developed by the INAH National Anthropology Coordination. His fieldwork is currently carried out among the Otomi of Hidalgo and Nahuas of the Sierra Norte de Puebla with research on ritual processes. Among his publications are: The book The game of alternations: life and death. Rituals of the life cycle among the Nahuas of the Sierra de Puebla, published by CONACULTA in 2005; Coordinator, along with Gabriela Garrett, of the book Los rostros de la alteridad. Carnival expressions in indigenous ritual, published by the Veracruzano Council of Popular Art. Coordinator of the indigenous peoples of Hidalgo. Ethnographic Atlas, published by INAH and the Government of the State of Hidalgo - CECULTAH. In addition to articles: "The ritual use of the" Santa Rosa "among the eastern Otomi of Hidalgo: the case of Santa Ana Hueytlalpan", in Dossier: The ritual use of entheogens in Mexico, in Cuicuilco. “A‘ Santa Rosa ’e o‘ dom de ver ’among the other Otomis from Hidalgo. Or the case of Santa Ana Hueytlalpan ”, in the book Fumo di Angola.