The greater part of Jamaica is a limestone plateau, with an average elevation of about 460 m (1,500 ft). The interior of the island is largely mountainous, and peaks of over 2,100 m (7,000 ft) are found in the Blue Mountains, which dominate the eastern part of the island; the highest point on the island is Blue Mountain Peak, at 2,256 m (7,402 ft) above sea level.
The coastal plains are largely alluvial, and the largest plains areas lie along the south coast. The island has numerous interior valleys. There are many rivers, but most are small, with rapids and falls that make navigation virtually impossible for any distance.