(Ball Arena, 1999, CO-03-07) in Denver, Arapahoe County, CO. Speer Blvd SE 0.55 miles from jct with I35 exit 212, SW on Chopper Cir 0.2 miles to the bldg on the NW side of the road. (N39 44.921 W105 00.457) Photo by Mark & Clare Comstock 4-23-22.