Qarah Dash, Qazvin is not a widely documented term in major English‑language reference works. The name appears to refer to a geographic locality—most plausibly a small settlement—in the province of Qazvin, Iran. The components of the name are of Turkic origin: qara meaning “black” and dash meaning “stone,” a common toponymic element in regions of Iran with historical Turkic influence.
Because reliable encyclopedic sources providing details such as administrative jurisdiction, population statistics, historical background, or notable features are lacking, no definitive description can be offered beyond this tentative identification. Further research in regional gazetteers or Persian‑language sources would be required to confirm the existence and characteristics of a place named Qarah Dash in Qazvin Province.