Top-secret project Commando Lava caused disruption along strategically vital Ho Chi Minh trail
As every festivalgoer knows, deep mud can make movement difficult, if not impossible. During the Vietnam war the US military weaponised this effect in an attempt to halt traffic on the strategically vital Ho Chi Minh trail.
Under the catchy name of Commando Lava, the top-secret project had Hercules transport aircraft flying at low level to disperse powder engineered to turn mud into glutinous super-mud.
