GF9s Official Dungeons & Dragons Decent into Avernus Avernus Map has a high-quality vinyl surface, ideal for tracking the progress of your adventures during the campaign. Welcome to Baldurs Gate, a veritable nest of rats and vipers clinging to the rocky slopes overlooking the Chionthar River. From their high perches in the Upper City, the local nobles known as patriars-gaze down with veiled contempt upon the common rabble in the grimy Lower City, which hugs the foggy harbor. The whole of Baldurs Gate reeks of blood, crime, and opportunity. One can easily fathom why pirates and traders are drawn to this place like flies to a carcass.