Gulf of Mexico numerous bays and smaller inlets. A number of rivers empty into the gulf, most notably the Mississippi River and Rio Grande in the northern gulf, and the Grijalva and Usumacinta rivers in the southern gulf. The land that forms the gulf's coast, including many long, narrow barrier islands, is almost uniformly low-lying and is characterized by marshes and swamps as well as stretches of sandy beach. The Gulf of Mexico is an excellent example of a passive margin. The continental shelf is quite wide at most points along the coast, most notably at the Florida and Yucatán Peninsulas. The shelf
Tenancingo, State of Mexico Tenancingo, State of Mexico Tenancingo de Degollado is a large municipality, and also the name of a town and the municipal seat of the municipality, in the State of Mexico, Mexico. Both are commonly known as Tenancingo. The municipality is located in the south of the state, in the Tenancingo Valley, just outside the Toluca Valley. Tenancingo de Degollado is often confused with Tenancingo, Tlaxcala, which is a town in a different state. It is a commercial area known for its industrious people who produce beautiful rebozos (a kind of shawl) which have been woven here since the colonial period