A nice island with lots of potential, fits into the Hewdamia setting quite well. With it being an island it's easy enough to plug into other settings just as quick and with minimal modification.
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One could also use this in a space faring campaign as an abandoned grave site of some long dead race, perhaps with bizarre high tech psi emitters to help dissuade would be grave robbers.
A great history behind an alchemist that could lead to some fun adventures as characters try to piece together the missing pieces of the mans past and what lead to his demise. (Either because they are his descendants or are hired by one of his colleagues to investigate the mans passing.)
An excellent and exhaustive underground area to replace the generic "dungeon" so many kingdoms have are of little interest to the residents, and characters simply scoff at being thrown into.
I like the plot hooks at the end the second one in particular. Similar to "Escape from New York" except with a lot more excitement and a lot less familiar territory.