Writer Rob Mitchum takes Yasi deep into the world of one of the most dedicated, enduring, and (some may say) mysterious fandoms of all time: Phish Heads. 

Follow Rob Mitchum on Twitter at @robmitchum and subscribe to his Grateful Dead podcast, 36 From the Vault, on Spotify.

Learn more about your ad choices. Visit podcastchoices.com/adchoices