National Geographic cameraman Bob Poole was filming elephants in Mali, West Africa, when something quite unusual happened: a giant dust storm rose up and swallowed all the light, turning day into pitch darkness. Naturally, he kept on filming! . Instead of running for the hills, they kept the cameras recording and waited it out. Madness.

http://gizmodo.com/5644010/taking-on-an-african-dust-storm-with-a-video-camera-and-a-headlamp