Gadzira shanduro yakaoma zvikuru yemutsara uyu Duke Island chitsuwa chiri muGravina Islands yeAlexander Archipelago muchikamu chekumaodzanyemba kwakadziva kumabvazuva kweU.S. nyika yeAlaska.
Zvechokwadi, shanduro yakaoma zvikuru yemutsara ndeyekuti "Duke Island chitsuwa chiri muGravina Islands yeAlexander Archipelago kumaodzanyemba kwakadziva kumabvazuva kweAlaska, pa, kuchamhembe kwemuganhu weCanada. "