While Stonewain Valley is in the staging area, resources discarded or spent by the first player for any reason are placed on Stonewain Valley.

Stonewain Valley gets +1 for each resource on it.

"Way is wide for four horses in Stonewain Valley yonder," he waved his hand southwards: "but narrow at beginning and at end." –Ghân–buri–Ghân, The Return of the King