Ingol

The isle of Ingol is probably a remnant of a former land bridge between Roshamuul and Marapur. It's assumed that in the distant past some cataclysmic force split the landmasses, creating the three landmasses. The island shaped by that event shows the influence of both areas. Considering how old the civilisation of the Naga is and how long ago the Roshamuul civilisation collapsed, it is difficult to tell when such a split took place. In all likelihood, the cataclysm happened even before the emergence of the respective civilisations. However, some findings on the island suggest that the Naga or the enigmatic Dreamthiefs have visited or attempted to colonise the isle at some point.
One can only speculate why a permanent presence was not established. Since the rise of humanity, the rather unassuming island has been a retreat for smugglers and other shady characters over the centuries, but no one has managed to establish a prolonged presence. Strange plagues and the sudden disappearance of people drove away all wannabe settlers. The most notorious of them was the pirate Destan De'Brue who terrorised the eastern seas for several decades. Constantly on the run from authorities and competitors, he built a small fort and a harbour. There he retreated to make repairs and care for his wounded. When his enemies finally assembled a small fleet to drive him away, they found not the notorious pirate but a sunken ship and a destroyed fort. In the ruins, the scouting party found only several charred and mutilated bodies. Without further investigations, the expedition hastily withdrew. News of their discoveries spread through the taverns and became more and more gruesome and detailed. No one felt a need to verify the tales or even sail near this place. So the cursed isle was abandoned and forgotten for a long time and was only occasionally mentioned in the yarns that some old sailor spun in a tavern.
Recently, however, rumours have surfaced that a daring scientist had made the isle his home. Other rumours, however, suggest that said man might have good reasons to retreat to such a cursed place. The identity of this man is disputed. While some claim that it is the infamous, supposedly dead Professor Maxxen, others are convinced that a still unknown madman has taken up residence on the island. Usually the person is identified as some local researcher who has disappeared in a suspicious manner. But most of these theories have little to no basis. Whatever this unknown man is up to, according to public opinion, it can't be good. It is said that suspicious ships with the isle of Ingol as their destination leave the ports under the cover of night with suspicious cargo. Some of the cargo, rumour has it, is quite alive but unwilling. Yet no one is brave or foolish enough to investigate such stories.