Deeply iterated <i><a href="https://en.wikipedia.org/wiki/Buddhabrot" class="extiw" title="en:Buddhabrot">Buddhabrot</a></i>.
<a href="https://en.wikipedia.org/wiki/User:Evercat" class="extiw" title="en:User:Evercat">Evercat</a>
Self made. Some relevant code at <a href="https://en.wikipedia.org/wiki/User:Evercat/Buddhabrot.c" class="extiw" title="en:User:Evercat/Buddhabrot.c">Evercat/Buddhabrot.c</a>