From publisher blurb:
Beneath the fetid roots of a noisome swamp linger the pathetic remnants of a once proud and noble tribe. Laid low by a powerful narcotic administered by their ambitious (but wildly paranoid) mistress, the lizardfolk of the Dark Oak are but a shadow of their former greatness. Now below the slumbering body of a diseased treant she plots to bring bloody slaughter to the folk of the nearby villages before her followers forget their proud heritage and sink into a lethargy from which there is no escape.
For this first time in print, this newly updated and expanded collector’s edition of Dark Oak includes not only all the original material, but the village of Thornhill to serve as a base for the PCs as well as all new details of the Redfern Swamp. Linking material to tie Thornhill and the machinations of the Dark Oak are also included so a GM can quickly and easily insert this multi-session adventure into his home campaign.