The Unholy Greyl is a Barbarians of Lemuria adventure by a fellow called G-Man that is being hosted over at Strange Stones. It runs 9 pages and is filled with BoL goodness. The Unholy Greyl has all the classic sword & sorcery qualities and as a result it hits all the right notes for me. It is atmospheric, set in a strange, mysterious locale, there is a lost and degenerate race, greed, slavery, and sorcery strange. The adventure has a definite terminus but the author also gives the GM a lot of flexibility and room to customize or randomize aspects of the scenario. It also includes an adventure seed that could lead the players further into the dar forest.
I don't want to give much more away, so suffice it to say that if you are a fan of BoL then I think you will like this adventure. Oh, and it's free!