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The Vipava Valley (pronounced [ʋiˈpaːʋa]; Slovene: Vipavska dolina, German: Wippachtal, Italian: Valle del Vipacco) is a valley in the Slovenian Littoral, roughly between the village of Podnanos to the east and the border with Italy to the west. The main towns are Ajdovščina and Vipava.