Tristen Gosselin dangles in mid air as climbers tackle the Boulders Climbing Gym at Stelly’s secondary school on Friday (Dec. 9), the day the $3-million, 7,500 sq. ft. addition to the facility opened. The gym will host the 2013 World Youth Climbing Championships Aug. 15 to 19, 2013, which is expected to attract more than 500 competitors from 50 countries and draw more than 2,000 spectators to the Peninsula.