Is there a place where people go missing?

Quest Text Think a fish that big would be tasty?

Summary Yes, I think there is.
I've heard rumors of people going to Eberdeen Island for some rare herb, and disappearing...
I heard that someone on the island
will ask you to get a special ore for him if you ask him for the rare herb.
Those who have gone to obtain that ore do not return.
Not a single one.
Some people have been saying that the herb really exists,
and people left for another place after becoming rich with that herb.
Others say the people have lost their lives trying to get the herb, or the ore.
They are only rumors though.