Earth Day Hike, Squirrel Creek Loop, Mountain Park Environmental Center, 9161 Mountain Park Rd, Beulah. $3. Sun., April 27, 10 a.m. Registration, 485-4444.
Climbing Wall open at the Starsmore Discovery Center, 2120 S. Cheyenne Blvd., 578-6146. Minimum height: 4'6". Must wear closed-toe shoes. Saturdays & Sundays, 3-4:30 p.m.
TangoSprings, Argentine Tango lessons and dancing, Gotta Dance Studio, 3625 Betty Drive. $10. Tuesdays, 6-10:30-p.m. 475-0625, www.tangosprings.com
Ballroom Dance Classes. Learn swing salsa, tango, waltz, fox trot and rumba. Ongoing, register anytime. Downtown YMCA on Wednesdays, 7:30 -9 p.m.; Fridays, 7-9 p.m. At the South East YMCA. On Mondays 7:30-9 p.m. Call 634-3029 or 473-9622.
Swing in the Springs dance lessons and dancing, VFW Hall, 430 E. Pikes Peak Ave. $2-$5, every Sunday, 7:30-10 p.m. 310-3907. www.swinginthesprings.com.