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
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
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
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.
Football, Basketball, Wrestling and Volleyball Tournaments
- Football, Basketball, Wrestling, Volleyball, Baseball and Soccer Camps
- Band Camps
Annual Round Valley Round Ball Shoot-out Basketball Tournament
Annual Round Valley's "Survival of the Fittest" Wrestling Tournament
Annual Round Valley Invitational Track and Field Meet
- "Chrome In The Dome" Car Show
Special Olympics Practice Site
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.