YouTube filmmaker Cory “Mr. Safety” Williams, DudeLikeHELLA, was wandering around Alaska together with his girlfriend recently when he had the idea of skipping some rocks on a frozen lake in Anchorage.
What he did not expect, though, was the wonderfully extraordinary sounds the skipping rocks made once they struck the lake’s surface. “This is the coolest sound I’ve ever heard!” he declared in a video.
The vlogger’s enthusiasm and sense of wonder are genuinely infectious. (Watch Williams’ rock-skipping in the video above, which has been queued to start at 3:41.)
“Had to watch the rock skipping like four times. Such an amazing sound” wrote a Facebook user after watching Williams’ clip of his lakeside adventure.
“That sound was awesome, but your reaction was … priceless!” quipped another.
Canadian magazine Cottage Life noted the “chirping and pinging” sounds made when people throw rocks onto bodies of frozen water are actually caused by the vibration of the ice. The magazine particularly wrote:
“They’re different from the noises you’d generate by whipping rocks at, say, dirt because underneath the ice the water isn’t solid. Ice vibrates up and down, similar to a drumhead or cymbal vibrating after being struck.”
Williams moved to Anchorage in August, and since then he has been documenting his Alaskan adventures on his vlog. You can watch his other videos here.
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