Determined athlete Jaan Roose, who is based in Estonia, landed what is thought to be the world's first double backflip on a slackline.<br /><br />After numerous failed attempts, Roose manages to compose himself after backflipping twice and stay on the slackline. <br /><br />The talented slackliner told Newsflare: "I've been slacklining for 9 years already and it took me six years to do the most wanted trick in slacklining. No one else was able to successfully land this since 'tricklining' existed."<br /><br />Upon landing the spectacular trick in the Estonia village of Vihtra earlier this month, Roose and his friend can both be heard letting out a cry of celebration. "Did it happen? I got it?" he asks incredulously in his native Estonian.<br /><br />The professional slackliner has worked as a performer during Madonna's "MDNA" tour. Roose has also worked as a stunt double for the movie "Assasin's Creed."