Shot with two canon 5dII’s and a gopro hd.  takeaways: 1) battery life isn't the best on the gopro, probably because it was cold 2) it was cold 3) really, really cold From wikipedia: Lassen Peak has the highest known winter snowfall amounts in California. There is an average annual snowfall of 660 inches (16.8 m), and in some years, more than 1,000 inches (25.4 m) of snow falls at its base altitude of 8,250 feet (2,515 m) at "Lake Helen". I can corroborate this claim.