The Rio Grande (image) Commission for Environmental Cooperation Caption You're looking at the US side of the river from the town of Boquillas del Carmen, Coahuila, Mexico. The river stretches along the US-Mexico border through the Big Bend-Río Bravo region, a vast expanse of over 3 million acres that is home to many rare and endangered plants and animals. Credit Catherine Hallmich Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.