sentences:  The observatory takes advantage of the high elevation, along with typically clear skies, low relative humidity, low atmospheric pollution, low light pollution, and low levels of radio interference.Sierra de San Pedro Mártir National Park is a national park located on the northern part of the "Cordillera Baja California" Mountain Range, known as Sierra de San Pedro Mártir.The elevated peak is thought to have begun to rise in the Paleozoic era through tectonic rifts.