Pic by Claudio Dores/Caters News

These daredevils certainly aren't SLACKING when it comes to getting the adrenaline pumping.
Andrey Karr, 29 makes his way across the highline as the ferocious waves crash around him in Portugal.

PIC BY SCOTT ROGERS / CATERS NEWS

Perched on lines often suspended hundreds of feet in the air, the stunts performed by these slackliners is enough to take your breath away. Here Pierre Carrillo walks a Utah highline.

PIC FROM BRUNO GRACIANO / CATERS NEWS

Marcio Cardoso on the highline 200m above the beautiful landscape of Rio De Janeiro.

Pic by Martin Knobel/Caters News

Louise Lenoble, 25 walks a slackline between 2 cable cars on the mountain of Moleson in Switzerland.

PIC BY Clemens Augustin/ Caters News

Alexander Schulz 25 from Rosenheim, Germany walked a 217 metre long slackline from one skyscraper to another, 240 metres high over Paseo de Reforma in Mexico.

Pic by Cara Urban/Caters News

Samuel Volery, 32 from Switzerland navigates the worlds longest slackline at 1210m or 3970 feet! in Turkey.

PIC BY NATHAN POLIS/ CATERS NEWS

Kenny Belaey rides a slickline with his bike, La Roche Fendue, France.