Hey, xfolo here, i was playing lava today, and i was safe in a tunnel, with coal on the outside. Well, it's ussaly safe on angry, and it was angry. Anyway, i was with someone, who first helped me with the coal, then just replaced it with dirt. I have a screenie, if you do not believe me.
http://imgur.com/lt6sfqx
http://imgur.com/lt6sfqx