I bought a book that came out in late 86 that I do not have anymore on acount of it being a 80 page paperback. It explained that vader was burned in lava during a fight. I also read a EU book that said something about him falling in some shaft LOL. I should go back in time and write an EU book that has vader grilling hamburgers and a drunken obi wan knocks his face into the grill then they fight and the propane tank blows up from being knocked over and the flames igniting it and shredding up poor vader. Then he wants revenge. LOL