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| | Coba ruins, Tulum, Riviera Maya, Yucatan Peninsula |
 | | Although Coba, located 45 km (28 miles) northwest of Tulum, is less well-known than either Tulum or Chichen Itza, it is one of the oldest Mayan cities and predates other better known cities in the area. |
 | | Coba is located near five of the largest lakes in the Yucatan Peninsula: Cobá, Macanxoc, Xkanha, Zacalpuc and Sina A Kal. |
 | | Coba's buildings are connected by a complex network of sacbes, or stone roads, that are believed to have been built between 600 and 800 BC. |
| www.undiscoveredmexico.com /archaeology/coba.html (401 words) |
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