... The Devoured Earth by Sean Williams

I finished the final book of the books of the Cataclysm today during my late lunch.
It was a fitting finale to the series and definitely puts it as the series of the year (although with only Fantasy-Family-Saga to compete with its not a huge field).

It may have been a little easy for the characters to defeat the realm consuming being in the end but otherwise it was quite a satisfactory ending to the series.