Notes

• [1]
  Simond has been the mountain sports brand for the Décathlon sports store chain since 2008. The company is the leader in mass retail for the sports market and must react rapidly to changes in physical leisure and sports practices. In 2014 Simond created a slackline kit, which is an indicator for Slackline popularity in France. Product sales grow by almost 50% in 2015 and have remained stable since. More than 140 000 of the brand’s kits have been sold in France so far. Similarly, specialised websites such as slack.fr or slack-mountain.com have shown strong growth in sales since 2010.
• [2]
  As witnessed by the comment and photos in the following: “Yosemite in the Fifties: The Iron Age” by Dean Fidelman, John and et Tom Alder, published in 2015; “Yosemite in the sixties” by Glen Denny in 2007 and “California Surfing and Climbing in the Fifties” by Yvon Chouinard, Steve Pezman and Steve Roper in 2013. We can also feel this atmosphere in the documentary film “Valley Uprising” by Peter Mortimer and ROSEN Nick from 2014 (86 minutes).
• [3]
  In order to carry out participative peripheral observation, we kept a field journal (notes and recordings) during the following festivals: the Winter Festislack; the Turkish Highline Carnival ; the Marmotte Highline Projec ; the Outdoormix Festival; the Ardèche Slackline Meeting and the Festislack. We also conducted interviews with six different groups, which we followed daily for between one and three weeks, in Aix-en-Provence, Lyon, Nancy, Nantes and Paris.