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The border of the Kingdom of Siam (Thailand) and its internal administrative districts are highlighted in yellow. Inset maps show the cities of Bangkok, Chiengmai (Chiang Mai) and Luang Pra Bang (Luang Prabang) in more detail.

The routes taken by the French civil servant and explorer Auguste Pavie are marked on this map of Siam (Thailand) and Cambodge (Cambodia), along with the telegraph line that he subsequently constructed from Pnom Penh (Phnom Penh) to Bangkok.