The north of Belize is mostly flat, swampy coastal plains. In some places it is heavily forested. The south has the low mountain range of the Maya Mountains. The highest point in Belize is Doyle's Delight at . The Caribbean coast is lined with a coral reef and about 450 islets and islands.The islands are locally called cayes (pronounced "keys"). Three of only four coral atolls in the Western Hemisphere are off the coast of Belize.