Black Mountain Recreation Center 599 Greenway Rd., Henderson, NV 89015 (702) 267-4070, www.cityofhenderson.com Recreation, Exercise, Racket ball, Socialization, Pool (outside), Yoga Boulder City Senior Center 813 Arizona Street, Boulder City, NV 89005 (702) 293-3320, www.bcseniorcenter.org Mon-Fri: 8am-3pm. Transportation, Nutrition, Recreation, Food, Foot Clinic, Senior Law Project, Medicare, SHIP, Monthly Trips Cambridge Recreation…