Tombs of the Howling Hills (2007)

cover blurb:
Deeper into the Howling Hills! Your party of adventurers has found that there is more to the invasion of the Wolf Nomads’ sacred burial grounds than simple bands of humanoids – the burial chambers themselves are overrun with unspeakable undead beings! But can you overcome the creatures in the Tombs of the Howling Hills, or will you join them in undeath?

This module was originally used as a convention adventure for the HMGS-South RECON ’05 convention, and is a continuation of a series of three related convention modules from THE DELVER’S DUNGEON.

This module contains a fully detailed scenario, maps, notes for the Dungeon Master, and full background for integrating it with the other modules. It may be used with WGH3 INTO THE HOWLING HILLS and WGH5 LORDS OF THE HOWLING HILLS or it may be played as a stand-alone adventure scenario.

from the introduction:
TOMBS OF THE HOWLING HILLS has been designed for a moderately strong party of 5th-8th level of six to eight characters; if a smaller party is present, higher level characters should be played.

This module and others are available as a free PDF from the designer's website, see the links section for the series entry.