In the extreme sport of highlining, athletes attempt to walk thin, nylon ropes stretched 500 feet in the air. Communities of like-minded adrenaline seekers form to take on these heart-pounding highlines together. Today, one of these athletes, spenceslacks, takes us on a field trip with him to Box Canyon. Follow our Instagram stories all day to which him and other highliners from discoveryplus series #PushingTheLine as they face their fears on the line. You can now stream the first two episodes of Pushing the Line on discoveryplus! #highlining #slacklining #ouraycolorado #extremesports