Heads will split and new heads will also bud from other areas.
Originally Posted by
Bang Guy
http:///forum/post/2865784
It will never grow into the rock it's on.
I've actually got one doing just that.
While the main group of heads are group up and out, the base of soft tissue and new skeleton is spreading onto adjacent rock with newly formed tiny heads sprouting from this new tissue (on the rock) rather than from the main stony body (soft tissue has to be in contact with the rock for this to occur though):