Volcano does leave behind THC, but there's too much other crap there to go smoking what's left.
DeepFriedBrain Reviewed by DeepFriedBrain on . Questions about the Volcano Vaporizer Hey there users. I got a few questions about the Volcano Vaporizer. 1. After you heat up the cannabis you'll obviously know that it turns into burnt up roach. Can you re-smoke that roach again in the vaporizer as a second section or roll it up in the joint? Or is all the THC gone from the first session? Rating: 5