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Strait of Anián

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Title: Strait of Anián  
Author: World Heritage Encyclopedia
Language: English
Subject: Strait of Juan de Fuca, Francisco de Ulloa, Prime meridian, Baja California Peninsula, History of Alaska
Collection: History of Alaska, Pacific Northwest
Publisher: World Heritage Encyclopedia

Strait of Anián

A 1610 map showing the Strait of Anian at the approximate location of the Bering Strait
1687 map showing Baja California as an island with a possible Strait of Anian extending toward Hudson Bay
1540 map showing an unnamed strait separating North America from "India"

The Strait of Anián was a semi-mythical strait that was once believed to mark the eastern end of Asia. The idea, or rather the name, is first documented around 1560. After Europeans reached the Bering Strait in 1728, versions of it survived until the northwest coast of North America was thoroughly explored. Most placed it near our Bering Strait. Others placed it as far south as California and hoped that it was the western end of a Northwest Passage that began somewhere near Hudson Bay.[1][2] A few thought that Asia and North America were joined.

The source of this idea is unknown. The Martin Waldseemüller map of 1506 or 1507 shows America and Asia separated. A 1562 map by Paolo Forlani shows Asia and North America joined north of about the latitude of San Diego. The strait probably took its name from Ania, a Chinese province mentioned in a 1559 edition of Marco Polo's book. The name probably first appeared on a map issued by the Italian cartographer Giacomo Gastaldi in 1562.[3] It appeared on maps by Abraham Ortelius (1564), Bolognini Zaltieri (1567) and Gerardus Mercator (1567). The Zaltieri and Gastaldi maps show it narrow and crooked. Gastaldi and Ortelius have an "Ania" or "Anian" on the east side of the strait. A speculative map of 1578 shows Frobisher Strait extending all the way across Canada and ending at the Strait of Anian.[4] A 1719 map by Herman Moll shows the strait as a probable bay at 50° North north of an Island of California. The 1728 edition of a map by Johannes van Keulen shows the strait north of the Island of California with the note that 'they say that one can come through this strait to Hudson Bay, but this is not proven.'

For related concepts see Early knowledge of the Pacific Northwest. See Shangdu (Xanadu) for two more maps showing a Strait of Anian.


  1. ^ Samuel Eliot Morison, The European Discovery of America, 1971
  2. ^ Derek Hayes,’Historical Atlas of the North Pacific Ocean’,2001
  3. ^ Hayes, page 24. He says this is a revision of a 1546 map.
  4. ^ Glyn Williams,"Arctic Labyrinth", 2010, page 30
The Tabula Rogeriana, drawn by Muhammad al-Idrisi for Roger II of Sicily in 1154 showing seawater at the east end of Asia. The map is upside down by modern conventions.
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