Flows S to the Thorne River, 4 km (2.5 mi) NE of Angel Lake and 4.8 km (3 mi) NE of Thorne Bay, on e coast of Prince of Wales I., Alex. Arch.
Named in 1956 by C. L. Sainsbury, U.S. Geological Survey (USGS), "because it is eroded into a sequence of lava beds."
Baronovichs Bay, Coal Bay, Forss Cove, Karta Bay, Kina Cove, Little Coal Bay, Little Ratz Harbor, Mills Bay, Poor Man Bay, Ratz Harbor, Thorne Bay, Tolstoi Bay, Twelvemile Arm Kasaan Bay,
Capes:Adams Point, Alder Point, Baker Point, Gull Point, Mound Point, Narrow Point, North Point, Outer Point, Ratz Point, Sandy Point, Thorne Head, Tolstoi Point,
Cities:Dams:Hills:Islands:Jarvis Island, Mabel Island, Pen Island, Tolstoi Island,
Lakes:Lake Number Three, Lake Number Three, Angel Lake, Big Lake, Copper Center Lake, Lake Ellen, Foot Lake, Ives Lake, Karta Lake, Lindeman Lake, Little Lake, Loon Lake, North Lake, Power Lake, Salamander Lake, Salmon Lake, Setter Lake, Thorne Lake, Trumpeter Lake, Water Lake, Wolf Lake,
Mine:Alarm Mine, Flagstaff Mine, Haida Mine, It Mine, Lucky Nell Mine, Poor Man Mine, Puyallup Mine, Rush and Brown Mine, Salt Chuck Mine,
Mountains:Baird Peak, Granite Mountain, Manty Mountain, Rush Peak,
Rivers:Streams:Andersen Creek, Deer Creek, Falls Creek, Flagstaff Creek, Goose Creek, Gravelly Creek, Linkum Creek, Little Ratz Creek, McGilvery Creek, Paul Young Creek, Poor Man Creek, Ratz Creek, Sal Creek, Slide Creek,
Cities: