on S tip of Catherine I., off NE coast of Baranof I., Alex. Arch. 0.2 mile wide.
Local name reported in 1935 by P. S. Smith, U.S. Geological Survey (USGS). The name was suggested "by perfect echoes audible on boats anchored there."
The Basin, Cosmos Cove, Echo Cove, Ell Cove, Florence Bay, Hanus Bay, Kasnyku Bay, Kelp Bay, Lindenberg Harbor, Middle Arm Kelp Bay, Sitkoh Bay, South Arm Kelp Bay, Takatz Bay, Waterfall Cove, Wilson Cove,
Point Lull, Point Thatcher, Point Turbot, Point Wilson, Point Caution, Point Craven, Point Hanus, Point Hayes, Deer Point, Lindenberg Head, North Point, North Point, Peninsular Point, Portage Point, Point Samuel, South Point, Woody Point,
Catherine Island, Crow Island, Dead Tree Island, Fairway Island, Lone Tree Islet, McClellan Rock, Pond Island, Round Island, Svensen Rock, Takatz Islands, Traders Island, White Rock, Yellow Rock, Zubof Rock,