The J. Lawrence Walkup Skydome is an indoor multi-purpose stadium in the western United States, located on the campus of Northern Arizona University (NAU) in Flagstaff, Arizona. Opened in September 1977, it is the home of the NAU Lumberjacks football and basketball teams of the Big Sky Conference. The seating capacity is 16,230, with 15,000 permanent seats and 1,230 seats in portable bleachers.