Synonyms for Devastation (same or very similar meaning)
WordNet sense 1 (the state of being decayed or destroyed):
desolationWordNet sense 2 (plundering with excessive damage and destruction):
ravagingWordNet sense 3 (the termination of something by causing so much damage to it that it cannot be repaired or no longer exists):
destructionFrom the ODE community, based on WordNetadd/edit