The Hochpustertal is the easternmost part of the Puster Valley, stretching from the watershed of the Rienz and Drava rivers at Niederdorf in South Tyrol down the Drava to Lienz in East Tyrol, Austria. The area includes the Sexten and Prags side valleys.
According to the 1915 London Pact and the 1919 Treaty of Saint-Germain-en-Laye, the Italian-Austrian border was drawn between Innichen and Sillian. As the Rienz-Drava watershed near Toblach is a rarely notable transition, the natural western boundaries of the Hochpustertal vary. Usually, in the valley the following municipalities are included:
Niederdorf, Sexten, Prags, Toblach, and Innichen in South Tyrol,
Address (Unnamed Road), 9918, Austria
Coordinates 46°45'23.32" N 12°29'51.906" E