The Barrow of King Jotunr: While the PC's are travelling, a storm blows in, and as darkness falls the band is attacked by a band of goblins on worgs, and scattered as the storm turns to blizzard. With the defeat or retreat of the goblin band, there is no chance that the PC's will be able to find each other, or even finding the road. Instead, their first priority needs to be finding shelter. In the blinding snow, even darkvision is limited. On a hilltop, briefly glimpsed in the distance, the PC's can see an artificial structure, an old Noladen fort. The PC's will find a simple rock wall around the summit of hill, but nothing useful within. However, a little bit of searching will lead to the discovery of a pathway down - a stone door, plainly copied from the dwarves, bars the way.
King Jotunr is an unusual sort of wight, cursed by his own wrath and greed. Once his body is destroyed, he will remain quiescent for a time. After a full cycle of the moon, he will reform as a Wraith that will manifest near the location of his lost sword. he will then attempt to slay the bearer of the sword, reanimate the corpse as a Wight, and return to his barrow to slumber again until he is again awoken by intruders.
Entranceway - Signs of recent occupancy, campfire and scattered belongs, old food. rats, carvings on walls.
Guardroom - Guards of the King, ultra Zombies (150xp), AC-14 due to bronze scale coats, and bronze swords (1d8+1), DC-10 1d6 lifedrain. These sleep in crypts and will kill intruders. They are loyal to the king. additionally, there are 1d+1 other zombies, more recent ones killed by King Jotunr, humans and goblins. They are insignificant, but will attack nontheless.
Longship and Hole - Rotting wooden longship, no significant treasure. On the far side, concealed only by a pair of rotted shields, is the downsloping tunnel to the caves. It is steep, but climbable.
King's Crypt - Right side entrance leads to a 20' pit with 4' of filthy water in it. A single Skeleton (50xp) waits at the bottom. King Joturnr, Wight (700xp), AC-16 due to bronze lamellar coat. Will kill intruders and add their treasure to his own, keeping the heads. Jotunr's long sword is a vorpal bronze weapon.
Cave - Goblin (50xp) Guard Chamber - Traps and alarms, noisy deadfalls and goblin guards. A single human head on a scarecrow with a shield and spear is propped up to draw intruders into making noises.
Cave - Goblin Lair - Exiled losers from the main group
Cave - Exiled Chief, Goblin Boss (200xp) and mate
Cave - Bugbear (200xp) Guests
Cave - Barred and guarded, trash pit full of rats and verminous nasty.
Monster Cave - A single Grick (450xp) lives here feeding on vermin in the nearby cave, and occasionally on the solitary goblin it can catch.
Trapdoor Spider - A single Giant Spider (200xp) of white and grey coloration resides here, hunting above ground but lairing here. It fears the goblins, but not the Grick.