Whispering Hollow
Whispering Hollow is a natural rock formation on an island neighboring Blacktooth Bay, where the geography of cave and channel makes sound carry in unusual ways. Inside a specific acoustic bubble, two parties can speak and be heard by no one beyond it.
It is used for information-brokering meetings between people who do not want to be seen together or heard by anyone else. The Information Brokers' Network of The Iron Coves uses it extensively as its preferred location for sensitive transactions. Reaching it requires knowing where it is; it appears on no chart available to outsiders.