Visitors often cross the Rio Grande to visit the Mexican village of Boquillas . The Department of Homeland Security closed the border crossing in 2002 due to increased security following the September 11 attacks , but in April 2013 , the Boquillas crossing reopened as an official Class B Port of Entry between the U.S. and Mexico . It is open Wednesday through Sunday between 9 am and 6 pm
September 11 attacks
September 11 attacks
Big Bend National Park