Highlining is slacklining at elevation above the ground or water.

Many slackliners consider highlining to be the pinnacle of the sport.

As he has previously said about highlining, “You slip, you die.”

Other ships were paired for highlining, sharing the remain- ing fuel.

But the more adventuresome have branched into highlining (sometimes performing hundreds of feet above the ground), waterlining and tricklining, Lewis’s specialty.

Each year, six short films are produced for the film tour ranging in scope from slacklining and highlining to rock climbing and ice climbing.

Lost Arrow Spire later became one of the early hotspots for Highlining, the version of slacklining on high places.

Highlining is so hard already and walking in high heels isn't easy either so combining them was very tricky," the Austin, Texas-native said -after surviving. "

Highlining is considered the pinnacle of the slacklining sport, in which people prove their balancing skills by walking across a polyester or nylon wire is fixed at two points.

Moab is also an increasingly popular destination for four-wheelers as well as for BASE jumpers and those rigging highlining, who are allowed to practice their sport in the area.

But Austrian daredevil Reinhard Kleindl, pictured here attempting to set a new world record for 'urban highlining' above the German city of Frankfurt, admitted he suffers from just that.

The group were inspired by the slackline pioneers who invented the sport in Californiaʼs Yosemite Valley in the late 1970s and, more recently, by slacklining legend Dean Potter who has taken highlining to a whole new level.

Some climbers and adventurers view untethered highlining as foolhardy, similar to “free solo” climbs that are done on difficult rock walls without any safety ropes or backup — just a lone climber with sticky-rubber shoes and a bag of chalk to dry the hands.