The Rif (Berber:) is a mainly mountainous region of north Morocco, from Cape Spartel an Tangier in the west to Ras Kebdana and the Moulouya River in the east, and from the Mediterranean Sea in the north to the river of Ouargha in the south. It is part of the Cordillera Bética that also includes the mountains of Southern Spain. The Rif mountains are not part of the Atlas Mountains but belong to the Gibraltar Arc or Alborán Sea geological region. The region's name comes from the Berber word arif.