Watch a guy cross a slackline as enormous waves crash below

This intense drone footage of a slackliner in Portugal starts off crazy and gets even crazier as massive waves knock him off balance.

A group of Slackliners called the "Western Riders" recently installed a line connecting the Cliff of Praia do Norte in Nazaré to the "Guilhim" Rock, a famous landmark known from viral photos of huge wave impacts and water explosions during the Portuguese Big Wave Season. The Slackliner on this video was identified as Emerson Machado, 28 years from Brazil. According to Machado, a member of the Western Riders, the line was installed days before a big swell arrived in Nazaré, and everything was cautiously planned, checked and re-checked to provide the maximum level of security possible to the slackliners performing the walk. "It's calculated risk, we are not crazy like it may seems at first sight, in reality everything was planned to the very minor details. Over the years, we've performed walks in many locations before, including Nazaré and we take this very seriously" says the member of Western Riders, "over the course of two days, we've performed dozens of walks between the cliff and the rock in Nazaré, and no one was ever injured during that time, it's relatively safe when performed by an experienced crew, working together with planning and caution" he adds.

The Rope [Slackline over Monster Waves in Nazaré] [Drone] (YouTube / Máquina Voadora)