A Swedish mycologist found a GoPro on the forest floor. The memory card was intact, and contained this video. Warning: it'll make you dizzy.

There are two important lessons about GoPros to take from this video. The first is that they deserve their reputation as action cameras. A camera has to be pretty hardy to fall from almost 10,000 feet and not be pulverized. The second lesson is that you still have to hold on to them. Or attach them to yourself somehow. Otherwise, your awesome action video will turn into a dizzying, terrifying, plummeting tribute to your own carelessness. Worse, you won't even get to see it. That is, unless a stranger uploads it to YouTube.

Sources: Kristoffer Örstadius