In late 588, a massive army of Turks invaded the eastern provinces of the Sasanian empire, reaching as far as Badghis and Herat.
The passes of the Paropamisus in the west are relatively low, averaging around 600 meters; the most well-known of these is the Sabzak between the Herat and Badghis provinces, which links the western and northwestern parts of Afghanistan.
Qala i Naw, Afghanistan, provincial capital of Badghis Province in northwest Afghanistan