The consequences of ongoing climate change are increasingly studied (Stocker et al., 2013). The way it modifies the glaciological and geomorphological characteristics of high mountains environments is a crucial topic (Haeberli et al., 2010; Einhorn et al., 2015; Beniston et al., 2018). However, while its impact on alpine skiing is well documented (Paccard, 2009; Joly and Ungureanu, 2018), its consequences on summer practises have been so far the subject of a more limited research. According to initial studies, high Alpine mountains seem to be more dangerous for mountaineering in general (