ia ▁is ▁an ▁advent ure ▁for ▁fant asy ▁role - play ing ▁games ▁published ▁by ▁Jud ges ▁Gu ild ▁in ▁ 1 9 7 9 . ▁ ▁Cont ents ▁The ▁Ca ver ns ▁of ▁Th rac ia ▁is ▁a ▁scenario ▁with ▁a ▁Greek ▁myth ical ▁background ▁that ▁describes ▁an ▁intr icate ▁d unge on ▁complex ▁and ▁lost ▁city . ▁ ▁The ▁upper ▁levels ▁are ▁for ▁low - level ▁characters ; ▁lower ▁levels ▁are ▁more ▁difficult . ▁ ▁This ▁supp lement ▁represents ▁a ▁series ▁of ▁rooms ▁and ▁ca ver ns ▁which ▁have ▁had ▁many ▁previous ▁own ers . ▁Long ▁ago ▁they ▁were ▁a ▁religious ▁center ▁for ▁l izard ▁men , ▁but ▁were ▁later ▁taken ▁over ▁by ▁humans ▁wor sh ipping ▁Th an atos , ▁the ▁god ▁of ▁death . ▁The ▁humans ▁used ▁be ast ▁men ▁( gn oll s , ▁min ota urs , ▁dog ▁brothers , ▁etc .) ▁for ▁slaves . ▁The ▁slaves ▁re bel led ▁and ▁the ▁ca ver ns ▁changed ▁hands ▁again . ▁The ▁be ast ▁men ▁chose ▁an ▁intellig ent ▁min ota ur ▁to ▁rule ▁them ; ▁his ▁descend ants ▁still ▁reign . ▁The ▁ca ver ns ▁are ▁now ▁in ▁the ▁hands ▁of ▁the ▁min ota ur ▁king , ▁except ▁for ▁a ▁small ▁part ▁of ▁the ▁first ▁level , ▁still ▁controlled ▁by ▁the ▁wor sh ipp ers ▁of ▁Th an atos . ▁This ▁d unge on ▁is ▁for ▁characters ▁of ▁levels ▁ 2 ▁through ▁ 6 . ▁ ▁The ▁Ca ver ns ▁of ▁Th rac ia ▁is ▁an ▁extensive ▁setting