Old-Town-Chicago-Rock-Climbing6-WEEK ADULT ROCK CLIMBING CLASSES AT THELEDGE BEGIN OCTOBER 29 – Challenge yourself to become the rock climber you’ve always wanted to be! THELEDGE can get you there, whether you are a novice or an experienced climber! All class descriptions and the full schedule of 6-week classes are posted here. Sign up by calling the Club at 312-640-1235. For more information, please contact Tom Petraitis at