The Forge of Rogbrok

Publisher's blurb:

The Forge of Rogbrok is a small introductory adventure for 1st-level characters, created entirely using the D&D Basic Rules. It should give a group of four 1st level characters enough experience points to advance to second level.

At a local tavern, the adventurers run into an old, drunken dwarven miner named Skirvir, who is boasting about having located an old dwarven mine, he is sure belonged to the long lost Jarnhammer clan. In fact, he is sure he has found the location of the lost halls of Gwandatholir itself...