There's a fine line between genius and stupidity, and this guy skirted it in style.
Italian base jumper Uli Emanuele filmed himself pulling off a ridiculously difficult wingsuit flight through a tiny two-metre cave in Switzerland.
The footage, captured on Emanuele's GoPro camera, shows the true scale of his challenge. As you can see, there is little to no margin for error.
You might find yourself involuntarily holding your breath as you watch him attempt what's more than just your ordinary challenge.
And we thought this
parachutist landing in a cable car was extreme.
https://www.youtube.com/watch?v=-C_jPcUkVrM
