Swamp · location

Sunken crypt

Swamp· the world generator places up to 175 · prefab SunkenCrypt4 · dungeon of 20–30 rooms

Altar and doors

Iron Gateopens withSwamp Key

Creatures

Oozer1 placed

Draugr1 placed · in 6 of 16 rooms

Blobin 6 of 16 rooms

Draugr Elitein 4 of 16 rooms

Draugrin 2 of 16 rooms

Chests and loot

Chestin some dungeon rooms · 4–5 rolls, no item twice

Item	Stack	Chance per roll
Withered Bone	1	4.7%
Ironhead Arrow	10–15	9.4%
Poison Arrow	10–15	9.4%
Coins	20–60	9.4%
Amber	1–5	9.4%
Amber Pearl	1–3	9.4%
Ruby	1–3	9.4%
Chain	1–3	9.4%
Ancient Bark	20–30	9.4%
Scrap Iron	10–20	18.7%
Iron Protection Idol	1	0.9%
Iron Battle Idol	1	0.5%
Silver Protection Idol	1	0.1%
Silver Battle Idol	1	0.1%

Things to pick up

Coins× 26 spots

Ruby× 26 spots

Amber× 26 spots

Amber Pearl× 26 spots

Withered Bone× 52 spots

Yellow Mushroom× 47 spots

Source: location prefab SunkenCrypt4 and its 16 dungeon rooms in Valheim 1.0.16 (2026-09-24).