Traversing across a skyline's worth of ridges, and piling up over 30 miles of foot travel, bagging 3 of the 5 tallest peaks in Colorado in under 24 hours, the Cloud City Highline is believed to be a new high altitude link-up in the Colorado Rockies, and it ain't for the faint of heart. 

The "GR® Trail of the Trappist Abbeys of Wallonia" links the three Walloon abbeys where Trappist beers are brewed: Orval Abbey, Notre-Dame de Saint-Remy Abbey in Rochefort and Scourmont Abbey in Chimay.