Check Out This Incredible Slackling Course Over a Hawaiian Waterfall [Video]

EL CERRITO, CA — If your interest in sports begins and ends with baseball, football and basketball, you're probably already asking, "What is slacklining?"

According to Alex Mason's Red Bull Bio, "Imagine doing backflips and 360s on a two-inch-wide strap hovering several feet above the ground and you’ll have the picture of what Alex Mason does for fun."

The El Cerrito teen took slacklining to a whole new level recently when he "ascended eight slacklines up a jagged, 80-foot waterfall on the Big Island of Hawaii."

For an awesome, 3-minute brain break, take a look at this beautiful (Hawaii) and graceful (Mason) video of the ascent, devoid of annoying play-by-play.

The 2013 Slackline World Champion has been dreaming of this ascent for more than a year, when it was first suggested during a Red Bull summit. Says Mason, "I usually train in a gym or in a park with friends. Pads, indoors, artificial light, no wind, no wildlife, no running water underneath, no rock. That was not the case in Hawaii.

"It was definitely a little bit out of my element. I’m not used to slacklining in the jungle, 15 feet over a jagged waterfall. Going into it was a little bit scary. A lot of the lines had potential for danger. There was a little bit of mental struggle with what we were doing there."

To read more about slacklining and this project, including the intricate rigging that made it possible, see this article on Red Bull.

Photo and video by Andy Mann/Red Bull Content Pool