Bomo locates two open forest stairwells near the castle and one locked basement stairwell tied to Queen Imogen's boss status.
Bomo's floor-wide stair sense identifies three exits in high-elf territory. Two stand alone in the woods and should resist Bramble until nearly the last moment; crawler groups guard both while the elves temporarily leave them alone.
The third lies in the castle's expansive basement and remains locked, confirming Queen Imogen as a boss whose defeat should open it. Thousands of other crawlers descend through the temporary settlement's stairwell before the brambles arrive.
Two forest stair portals and one sealed basement stairwell beneath a massive white castle.
The stair network supplies escape contingencies and confirms the boss-linked route inside the castle.