The Sirouada is the largest tributary of the Bosouada. Its source is a large waterfall north of Hla Bulor, from where it flows generally east before heading north and through two huge meanders before turning east and joining its parent just outside Ranyon-ruhn.
For much of its course, the river has incredibly steep banks, especially where it cuts the two gigantic turns through Boethiah's Spine. At the start and end of its journey, however, the river has gently-sloping banks, with fertile land on either side.
The Veniroth Ancestral Tomb lies next to the river, close to its source. Further along, just beneath the river surface, is the cave/grotto, Kitanga.