Cornwallis was not terribly well liked by his interplanar travelling companions, but he was tolerated until one day when they had used a gate into another world, finding themselves in an archeological excavation. After engaging the locals in a bit of a scuffle, he decided to set off an incendiary near the support beams of the excavation, threatening to collapse everything. At this point, the best idea for quenching the flames that came to mind was to use the gate deeper underground to open to the bottom of a previously discovered lake...