The Troubled Lands
Madmire is an island on the fringe of The Old Empire, in The Far Reaches. Its original use was as a penal colony for dangerous criminals that could not be safely contained elsewhere. To ensure that prisoners needed to only be contained for so long, Imperial mage-artificers made use of an unstable anomaly in time to trap the island in a loop, re-living the same eight hours over and over, in an experimental undertaking known then as Project Lazariat. An intricate device was built that could control the anomaly and suppress it when necessary.
When the Empire fell, the project shut down and the loop ended, but the device remained, ensuring the anomaly remained stable. At present, the island is home to a isolated tribe of Trolls who descend from Imperial days, and receives hazardous weather and dangerous rains from its proximity to The Maelstrom.
At some point between the Cataclysm and now, a shipwreck survivor from Port Fortune re-activated the loop by removing part of the control device. He and the rest of the island became caught in the cycle until the arrival of the Waveblade.