Ecuador
Ecuador's capital is Quito, which is in the province of Pichincha in the Sierra region. Its largest city is Guayaquil, in the Guayas Province. Cotopaxi, just south of Quito, is one of the world's highest active volcanoes. The top of Mount Chimborazo (6,268 m, or 20,560 ft, above sea level), Ecuador's tallest mountain, is the most distant point from the center of the Earth on the Earth's surface because of the ellipsoid shape of the planet.
Guayas River
The Guayas River has one of its sources in the Andes and the Chimborazo (volcano), Ecuador's highest volcano. The coat of arms of Ecuador shows an image of the river descending from the mountain. "Guayas" is the name of the lower part of the river, which starts at the confluence of the Daule River from the west and the Babahoyo River from the east, between the cities of Guayaquil and Durán, in Guayas province. The Guayas River then flows around Santay Island, and becomes one current again. From the confluence to the delta 60 kilometers away, it borders Guayaquil (canton) and Durán cantons, and Guayaquil and Naranjal cantons, just before the delta.