closeup afro-american man feet walking on tightrope or slackline on sandy background. slacklining is a practice in

action activity adrenalin adult adventure artist back background balance barefoot boy caucasian concentration determination extremal fit fitness foot freedom fun grass health legs leisure line meadow nature one outdoor park performance performer person risk risky rope single skill slackline slacklining sport stunt tightrope tree trick tricklining walk walker woods young