 Nikolai Mikhaylovich Albov is credited with being the first European explorer to have traveled extensively over an archipelago off the southernmost tip of the South American mainland across what strait?         
Nikolai Albov:  He is credited with being arguably the first European explorer to have traveled extensively over Patagonia and Tierra del Fuego and (writing in Russian and French), described its flora. Tierra del Fuego: Tierra del Fuego ( , ] ; Spanish for "Land of Fire") is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan.
i don't know