The Buzz speaks with the education coordinator at the Padre Island National Seashore to understand the ins-and-outs of visiting the pristine land for camping. Padre Island National Seashore is the longest stretch of undeveloped barrier island in the world. If basic boondocking on the beach isn’t for you, there are 600 RV spots nearby at Isla Blanca Park, South Padre Island KOA and Andy Bowie Park.