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Extreme climbing is not a sport the majority can stomach, but for Heinz Zak it's all in a day's work.
51-year-old Zak has spent the last eight years touring the globe and trying out his terrifying high-altitude wire-walking wherever he can find the right spot.
Zak, pictured here walking across a chasm in Yosemite National Park on a 173-metre rope, thrives on walking across chasms, over tiny inch-wide strips of material.
Zak, from Scharnitz in Austria, said he 'loses himself' when he is walking, becoming hyper-focused as he does so.
'If you think about anything else it could mean death,' he explained. 'What I do is not about adrenaline,' he said. 'Walking a highline is my way, it's just what I do.'
Zak is regarded by fans as a pioneer in the field.
His fascination with the sport began in the 1980s, when he visited Yosemite National Park with some friends and discovered a slackline.
He has travelled through Austria, Germany, America, Italy and the Czech Republic.
Besides the highlining shown here, Zak also enjoys slacklining, where he crosses lakes just feet from the surface.
Extreme climbing is not a sport the majority can stomach, but for Heinz Zak it's all in a day's work.
51-year-old Zak has spent the last eight years touring the globe and trying out his terrifying high-altitude wire-walking wherever he can find the right spot.
Zak, pictured here walking across a chasm in Yosemite National Park on a 173-metre rope, thrives on walking across chasms, over tiny inch-wide strips of material.
Zak, from Scharnitz in Austria, said he 'loses himself' when he is walking, becoming hyper-focused as he does so.
'If you think about anything else it could mean death,' he explained. 'What I do is not about adrenaline,' he said. 'Walking a highline is my way, it's just what I do.'
Zak is regarded by fans as a pioneer in the field.
His fascination with the sport began in the 1980s, when he visited Yosemite National Park with some friends and discovered a slackline.
He has travelled through Austria, Germany, America, Italy and the Czech Republic.
Besides the highlining shown here, Zak also enjoys slacklining, where he crosses lakes just feet from the surface.
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