THE YUCÁTAN PENINSULA is made up of 3 states: Campeche, Quintana Roo, and Yucatán, which also include major resort areas such as Cancún, Cozumel, and Playa del Carmen. The Yucatán Peninsula extends northward from Central America and is bordered on the east by the Caribbean Sea and on the north and west of the peninsula by the Gulf of Mexico. The Yucatán Peninsula measures 70,000 square mile (181,300 square kilometer) and is considered a low, flat limestone tableland with coastal rocks dating back to the Pleistocene and Holocene ages; older deposits from the Miocene and Eocene ages are found farther inland. It is located in the southeastern part of Mexico and has a tropical climate with summers that are often wetter then the winters. While a majority of the inhabitants of the Yucatán Peninsula are modern descendants of the Maya people, the area is also very heavily populated with tourists in the 3 major resort areas.