Monolithic Dome Sports Facilities Hinton High School Gym — With features such as spectator seating, lockers under the seating area, a green room for receptions and a graceful lobby, Hinton High School is amazing. Breckon Sports Center — This two-story Sports Center, flanked by two gyms, provides convenient access to restrooms, concessions and administrative offices. Beggs Event Center — This Monolithic Dome has a diameter of 160 feet and is built on a 24-foot Orion stem wall. Beggs Event Center can accommodate more than 2000 spectators and a variety of sport and school activities.