Punta Dungeness marks the border between Chile and Argentina, and according to the Treaty of Peace and Friendship the line between Punta Dungeness and Cabo del Espiritu Santo marks the limits of each country's territorial waters and the border between the Pacific and Atlantic Ocean.
This is the only place where the Atlantic Ocean touches the shores on the mainland of Chile, at the entrance to the Strait of Magellan.
The headland was named after Dungeness on the south coast of England, to which it bears some resemblance.
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