Retired National Park Ranger and pilot Marcos Paredes has founded Rio Aviation  to show folks a bird’s eye view of Big Bend. From the air, you  view the unobstructed geology of this amazing region, and can imagine the powerful process that made and continue to shape our planet.   Rio Aviation is licensed to conduct tours over both the Big Bend National Park and Big Bend Ranch State Park. Though many take the pilot’s recommended routes for maximum scenery,  guests also customize  flights  to see their favorite Big Bend landmarks from the air.