Ozark Trade Center15-20 spaces, electric, water, and sewer. On Highway 65 south of Twin Groves. Cost was $8 (included utilities) when we stayed there a few years ago. State: Arkansas City: Greenbrier Nearest Town: Unknown Status; Official Cost: 10 or less Nearest Road: Unknown Scenery Rating: 3 Months Opened: Year Round Extras: Water Electric Sewer Dump Station Number of Camp Sites: 11-29 Max Stay : Unknown -