on W coast of Harris Peninsula, 5 mi. NW of Aligo Point, 33 mi. SW of Seward, Chugach Mts. 1.8 miles long.
So named by the 1928 U.S. Coast and Geodetic Survey (USC&GS) field party "because of its being encircled by ridges of igneous rock."
Aialik Bay, Bear Cove, Cataract Cove, Cliff Bay, Coleman Bay, Crater Bay, Cup Cove, Fire Cove, Harris Bay, Holgate Arm, Lower Pedersen Lagoon, McMullen Cove, Northwestern Fiord, Northwestern Lagoon, Paradise Cove, Porcupine Cove, Quicksand Cove, Ripple Cove, Sandy Bay, Taz Basin, Three Hole Bay, Tooth Cove,
Capes:Aialik Peninsula, Granite Cape, Harris Peninsula, Harris Point, Holgate Head, Three Hole Point, Toe Point,
Channels:Dora Passage, Granite Passage, Petes Pass,
Glaciers:Glacier G210103E59831N, Glacier G210154E59811N, Glacier G210165E59785N, Glacier G210167E59798N, Holgate Glacier, Pedersen Glacier, Upper Pedersen Lagoon,
Hills:Islands:Beehive Island, Dora Island, Granite Island, Harbor Island, Hub Rock, Lone Rock, Matushka Island, Natoa Island, Seal Rocks, Slate Island, Twin Islands, Verdant Island,