This is a holiday module by Goodman Games for level 1 adventurers.
From the publisher:
An all-new holiday module, perfectly themed for the holiday season! And fully compatible with both Dungeon Crawl Classics and Mutant Crawl Classics!
For generations, two tribes have exchanged gifts at a given time each winter to renew the bonds of their peoples. But now their presents have been stolen! The Seekers are sent on an urgent mission to recapture the gifts before their ancient treaty is undone. To do this, they will have to venture to a place of bloodcurdling horrors, mysterious symbols, wondrous artifacts and twisted technologies. And once inside this ancient place of splendors, they’ll face the greatest challenge of all: returning home alive!