This is a large Aspen bowl (almost 11″ across by 5″ deep).  It had a natural void in it where I inlayed a large amount of turquoise.  The other inlay area was some ant trails where they’d started the process of eating the wood, then moved on.  The black lines along the top of the bowl & inside are called “spalting”.  It is a bacteria that attacks the tree once it is dead.  .