Location: New Zealand
I am a huge fan of the Halo forerunner saga. I have read both Cryptum and Primordium where it was mentioned that the final battle of Charum Hakkor took around 50 years.
I am wondering how long the entire war took? was it around a 1000 years?
From: Greg Bear
A few centuries, as I recall--but Waypoint could likely answer this for sure!