Taz Basin is a small cove, on the west coast of Granite Island, about 35 miles (56 km) southwest of Seward, Alaska. The local name was first reported in the early 1950s on charts published by the U.S. Coast and Geodetic Survey.
The cove is a remarkable cliff-walled natural harbor with depths of 15 fathoms (27 m). The entrance is narrow and has a rock 5 feet (1.5 m) high in the middle. Small vessels enter on the north side of the rock where there is a reported depth of about 2 fathoms (3.6 m). Once inside the entrance, vessels can maneuver and find shelter from storms.
Granite Island is managed by the Alaska Maritime National Wildlife Refuge as part of the Chiswell Islands, a sanctuary for seabirds and marine mammals. The Chiswell Islands are a rugged group of small mountainous islands, sea stacks, rock spires, and reefs located offshore from Kenai Fjords National Park between Harris Bay and Resurrection Bay. The island rock is erosion resistant granodiorite, part of a massive pluton that remains where glaciers have scraped away the softer sedimentary rock leaving behind sheer vertical surfaces. Read more here and here. Explore more of Granite Island here: