The Grailwood sprawls across the slopes northeast of Mount Tolaria, its name earned over generations of failed expeditions. Treasure-hunters who come to Old Tolaria seeking Tolarian artifacts consistently pass through this forest on their way to the interior, and the forest has come to be associated with the futility of that search. You come looking for the grail; you leave with nothing, or you don't leave at all.
The trees here are old, old enough to have survived the cataclysm rather than growing up after it. Many are partially awakened, not fully sapient like the oldest of Old Tolaria's transformed groves, but aware enough to lean toward movement, to root up into footpaths overnight, to cluster branches against people who linger. They don't speak. They remember being trees, and they're angry about what happened to the rest of the forest.
Scattered through the Grailwood are small stone markers from before the fall: boundary posts, survey cairns, the foundations of a way-station. These predate the awakening and the trees treat them neutrally, neither obscuring nor highlighting them. The markers describe a coherent path toward Mount Tolaria's summit, which suggests the old Tolarians walked this forest regularly. What they carried and what they left behind has not been found.