you try to slack line there suspended between 2 trees then prepare to meet the master was a obvious tonja is what you call an extreme black line around among other feats he recently performed the world's 1st ever backflip on a slack line so we paid him a visit. it's 9 in the morning in vasco a village in southeastern stony and. one of the world's best slack liners it's the start of a normal training day. i feel freedom. ya know all the trains daily for up to 8 hours which. was like wind gives this feeling of something impossible in the beginning but it's quite easy to reach just by practice. every year who develops countless new moves in the slacklining scene he's known as the crazy is stoney and. his stunts mix elements of break dance and classical dance . and sometimes he makes use of unusual props. even madonna was impressed by his talent and tenacity in 2012 she hired then a 20 year old physics student for her m.b.a. in a world tour that brought him his big break as a professional slack line or mother no one to actually include into the upcoming tour and she went to 2 years so i was o