This is a fascinating and historically accurate shipwreck poster of Lake Ontario, “The Graveyard of the Great Lakes.” A double-ink printing technique is used to create the dark navy blue on cream paper. The result is a stunning, rich effect. For anyone interested in shipwrecks, this map offers the very best information regarding when, where, and what. “Portholes of History” give insight, facts, and figures. Shipped rolled in a tube.