The Round Valley Ensphere (Dome) is a dramatic manifestation of the vision and courage of the twin communities of Eagar and Springerville Arizona. As a facility, it is the first fully day lighted dome of its kind, letting not only light but also heat enter the 8,000,000(eight million) cubic feet of space. Together with natural ground heat emission, the temperature is maintained to within a few degrees year-around, requiring a minimum of energy. Acoustically, the shell ceiling absorbs 90 percent of sound creating clarity of voice announcements and musical performances.

The Round Valley Ensphere, a reticulated glue-laminated timber dome seating 5,000, was constructed to accommodate football, basketball, track, softball, volleyball, wrestling, and physical education. The Ensphere’s field level, with its many configurations and varying floor surfaces, provides for a great number of athletic activities. The Dome provides a field area of 113,000 square feet for football, an eight-lane, 200-meeter track with 110-meter straightaway, long and high jumps, pole vault and seven basketball / volleyball / tennis / badminton courts, or any combination thereof and 2 High School regulation portable wood basketball courts.

Team facilities, lockers and showers (Which can accommodate six teams simultaneously), storage and laundry facilities are located on the field level. Seating access, restrooms, offices and concessions are located on the concourse level.

The dome lends itself to many community activities, conventions, exhibitions, fairs and concerts as well as a multitude of high school and middle school sporting events, various assemblies and field days.

The public can approach from both the West and East. Approach roads partially circle the building, forming marquees for busses and passenger cars. Parking for 400 cars and 18 busses is close by, with overflow parking for an additional 300 cars on school property.

The concourse is approximately 250 feet long and varies from 25 to 45 feet wide. Ten stairways lead up to the seating area with an elevator available for lower floor access. There are two separate concession areas available for event support. Two blocks of public restrooms are available on the concourse.

• Dome Diameter: 400 Feet

• Footprint: 152,000 Sq. Ft.

• Height: 104 Feet at Center

• Fixed Seating: 3,500

• Movable Seating: 1,830

• Handicapped Seating: 18

• Field Seating: 3,870

• Maximum Seating: 9,200

• Field Area: 120,000 Sq. Ft.

• Total Floor Area: 189,000 Sq. Ft.

• Total Ground Area: 650,000 Sq. Ft.