Between San Christoval Channel and San Alberto Bay, 0.25 mi E of Cruz Island and 0.6 mi NW of Catilina Island, Alex. Arch.
Spanish name recorded in 1907 by E. F. Dickins, U.S. Coast and Geodetic Survey (USC&GS); The name was taken from Ysla de Piedras, meaning "Island of Stones," given in 1775 by Don Juan de la Bodega y Quadra and Francisco Antonio Maurelle. Baker (1906, p. 531) published the translation Rocky Island."
Alberto Reef, Balandra Shoal, Ballena Island Shoal, Curacao Reef, Fern Reef, Fish Egg Reef, Kabanof Rocks, Klawock Reef, Larzatita Island Reef, Parida Island Reef, Rana Reef, Saint Ignace Rock, San Christoval Rock, Sucia Ledge,
Port Bagial, Port Caldera, Port Estrella, Port Mayoral, Aguirre Bay, Bucareli Bay, Crab Bay, Garcia Cove, Gulf of Esquibel, Indian Garden Bay, Kaguk Cove, Klawock Inlet, Nossuk Bay, Salt Lake Bay, San Alberto Bay, Shelter Cove, Shinaku Inlet, Tonowek Bay, Warm Chuck Inlet,
Point Maria, Point Miliflores, Point Miraballes, Point Polocano, Point Providence, Point Saint Thomas, Point Caponeta, Point San Leonardo, Point San Pasqual, Point San Rafael, Point Santa Lucia, Point Santa Rosa, Point Santa Rosalia, Point Swift, Point Aguirre, Point Amargura, Point Animas, Point Batan, Point Cangrejo, Point Capones, Point Cocos, Point Cosinas, Point Cuerbo, Point Delgada, Point Espada, Point Eugenia, Point Garcia, Point Gorda, Point Ildefonso, Point Iphigenia, Point Lomas, Agueda Point, Arrecife Point, Arrecite Point, Bay Point, Blanquizal Point, Bobs Point, Canal Point, Cape Cambon, Cape Empinado, Cape Flores, Cape Suspiro, Cemetery Point, Diamond Point, Entrance Point, Fern Point, Guktu Point, Kauda Point, Palisade Point, Pepper Point, Punishment Point, Punta de los Almos, Punta De los Islotillos, Punta Maria Antonia, Punta Noriega, Punta Palmito, Reef Point, Silvester Point, Snail Point, Sword Point, Tranquil Point, Triste Point,
Abbess Island, Abrejo Rocks, Alargate Rocks, Animas Island, Arboles Island, Balandra Island, Ballena Islands, Bibora Island, Cabras Islands, Caracol Island, Catalina Island, Clam Island, Cole Island, Coposo Island, Coronados Islands, Craig Island, Cristina Island, Cruz Islands, Culebra Islands, Dasani Islands, Fish Egg Island, Garcia Island, Hermagos Islands, Hermanos Islands, Isleta, Joe Island, Klawock Island, Kubanof Rock, Ladrones Islands, Larzatita Island, Lulu Island, Madre de Dios Island, Muerta Island, Palisade Island, Parida Island, Peratrovich Island, Phillips Rock, Piedras Island, Pine Island, Point Swift Rock, Point Swift Rock, Quitasueno Rock, Rancheria Island, Rosary Island, Saint Ignace Island, Saint Philip Island, San Clemente Island, San Fernando Island, San Juan Bautista Island, San Juanito Island, Santa Lucia Island, Santa Rita Island, Shaft Rock, Sola Rock, Sombrero Island, Toti Island, Triste Island, Tuft Rock, Wadleigh Island, Wadleigh Rock, The Witnesses,