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| | World Monuments Watch (Site not responding. Last check: 2007-10-09) |
 | | Rising to preeminence on the banks of the Usumacinta in the sixth and seventh centuries a.d., the sites reached their apogee in the mid-eighth century when most of the temples, palaces, pyramids, and ballcourts we see today were constructed. |
 | | In antiquity, the Usumacinta, which now separates Guatemala and Mexico, served as a commercial highway for dugout canoes laden with exotic goods moving from the highlands of Guatemala and Chiapas to the Gulf of Mexico. |
 | | In addition, the entire cultural landscape is threatened by the proposed construction of a hydroelectric dam on the Usumacinta, which could result in the destruction of these two ancient citiesand more than a dozen sites between them that have yet to be fully documented. |
| www.wmf.org /html/programs/guausu.html (422 words) |
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