Hippies do the darn'dest things. Just check out this video of a bunch of wookies emerging from an underground cave they built for the All Good Festival. Per the YouTube post there is a logical explanation for this:
Probably not entirely safe for me to disclose this, but... these are caves dug by the "Nitrous Mafia". They actually stash tanks in them a couple months before the festival takes place, and that's why this festi is FLOODED with balloons all weekend... thought you might like to know...
Posted by Jungle Jay at 12:28 PM