* Over time, lava can freeze naturally, but has a smaller chance to spread to neighboring tiles instead.
** Spreading lava may affect non-rock tiles such as dirt, grass, bushes or even paved tiles, changing them to lava as well. When this lava freezes, the tile will become rock, effectively raising the rock layer on that tile.
* Trees keep a lava tile from spreading until they reach shriveled age. Enchanted trees will live forever and therefore block the lava spread forever.
* When spreading to nearby tiles, lava will only become a lava column beneath these tiles if the tile is not already mined out.
* Lava tiles consume anything on their north and west tile borders.