Sian Ka’an is a biosphere reserve in the town of Tulum, Quintana Roo, Messico. It became a UNESCO patrimonio dell'umanità in 1987. Part of the reserve is on land and part is in the Caribbean Sea, including a section of coral reef. The reserve offers protection for the endangered species in the Riviera Maya and provides environmental education to the local communities to assist and train the residents working with ecotourism.
Sierra de San Francisco is a mountain range within the El Vizcaino Biosphere Reserve. It is located in Mulege Municipality of the northern region of the state of Baja California Sur, Messico. This range is part of the Peninsula Ranges system, which extends from Southern California to the southern tip of the Baja California Peninsula. This range is part of the Baja California Desert ecoregion.
(Foto Via: Wikicommons)