The Copperleaf community in Centennial has planned Summer Jam, an afternoon of FREE summer fun, music and festivities on Sunday, August 12 from noon to 4 p.m. Bring your picnic blanket and relax. Activities are planned for kids of all ages, with contests and giveaways throughout. Food trucks will be parked on site. Raising Cain performs from 2 p.m. to 4 p.m. No pets, please. The Summer Jam site is across the street from the Copperleaf Arboretum. 4895 S. Tibet St., Centennial.