Professional skier and extreme-sports filmmaker Nicolas Vuignier has collected a cultish following for his action-packed, often selfie-stick-shot videos, released bi-weekly via his YouTube channel. For his latest project, the Swiss native brings an eruptive addition to his usual output: PBK1, a jet-black pigment after which the potent video takes its name. As impressive smoky trails follow a speeding Vuignier, he hits the slopes for a final run before the season draws to a close.