It is in Ghostlands, about 43 steps south-east of the spot the map marks with that name.

And 1 down from the surface once you are there.

• 1 — Ghostlands, as the map itself names it
• 2 — the ground above the treasure

• A rope. You drop in through a hole, and a rope is how you climb back out.
• Something for demon skeleton, slime and fire devil — they live down there.

The chest is 1 floor under the surface. Going down over it, this is what each floor uses:

1. Ground: down through a hole.

• 1 — the way in: a hole, ground
• → — the treasure lies this way

• 1 — the chest

The strongest 14 of 17 kinds whose nests reach this place.

One chest, one reward.