The Decade of Floods came after the Centaur Wars. The Centaur Wars had required Corus to build a city wall. The harvest was always less fruitful after that. When the Deacde of Floods came it swamped the Lower City taking with it the rich soils. By the time the flood was over only a few layers of the soil remained. Beneath that, the Pink City rock.
- Terrier, April 4th (pg. 155, Random House paperback)