The range's highest peak is
Picacho del Diablo at in elevation. Also known as
Cerro de la Encantada (Enchanted Mountain) and
Picacho la Providencia (Providence Peak), it is the highest point in Baja California state and of the entire Baja California Peninsula. The range is a
drainage divide that demarcates the drainages flowing west into the
Pacific Ocean or east into the
Gulf of California for this section of the Baja California Peninsula. Snow is usually present at the highest elevations in the winter. The
Sierra de Juárez are on the north, and
Sierra de San Francisco are on the south, both are also part of the
Peninsular Ranges System. .
Features ;Parque Nacional Sierra de San Pedro Mártir
Parque Nacional Sierra de San Pedro Mártir protects an area of in the Sierra de San Pedro Mártir. It was established by presidential decree in 1974, and the first of two national parks to be established on the Baja California Peninsula. The second is
Parque Nacional Constitución de 1857 to the north, in the
Sierra de Juárez and also in Baja California state. ;National Astronomical Observatory The
National Astronomical Observatory is located at an elevation of in the range. The astronomical complex was built in 1975. It has several large
telescopes, the largest of which is in diameter. The observatory's site 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. The range was a site considered for construction of the
Thirty Meter Telescope, now tentatively planned for a controversial site on
Mauna Kea in Hawaii. In 1889, there was a gold rush in the Santa Clara mountains about southeast of
Ensenada. ==Ecology==