Mastering the YouTube search function can dredge up a bounty of goods to satiate even the most rabid of video lurkers. With 300 hours of video uploaded to YouTube every minute, the odds are ever in your favour of stumbling upon something new that you’ve never seen before. Plenty of hotspots amass these cult gems, such as Reddit’s Obscure Media and Camp Cult subreddits. But if you don’t know what to look for, it can be an endless scroll of indecision. In the realm of documentary film, YouTube’s got a lot on offer. So as it celebrates its 10th anniversary this week, we cherry pick ten of the best cult documentaries on YouTube.