The International Highline Meeting festival seems like one of the chillest festivals we’ve ever heard of, but it also might be one of the most terrifying – attendees spend most of their time strung up on tightropes stretched across the Italian Alps in Monte Piana. The attendees call themselves “slackers” because of the slacklines they balance themselves on. Highliners attach the materials to a strengthened ‘highline’ as they walk out to their designated relaxation spots – 150ft high. Snapper Sebastian Wahlhuetter captured the breath-taking shots as 22 people hopped into 16 hammocks. The meeting ran from 6 to 14 September, with 500 people attending.