I remember reading an article discussing the difficulties of re-directing a lava flow. One thing they mentioned was they tried dropping concrete blocks into or in front of the flow, and the concrete just floated on the lava.
People tweeting stuff. We allow tweets from anyone.
RULES:
I remember reading an article discussing the difficulties of re-directing a lava flow. One thing they mentioned was they tried dropping concrete blocks into or in front of the flow, and the concrete just floated on the lava.