Deep under the surface lays the abandoned dwarven city of Onager. Though its halls might not be as bustling as they once were, there's still plenty of adventure to be found. And in The Grey Dwarven Underground City of Onager, a new RPG adventure for 5th edition D&D that's up on Kickstarter now, your party can see just what there is to be found there. Monsters, treasure, adventure, excitement, really wild things. Head over to the Kickstarter campaign and check it out.
From the campaign:
The campaign is up and running now with 19 days left to go.