When was the Kamakhya Temple founded?

Name: Kamakhya Temple.
Founder: Mlechchha dynasty.
Location: Nilachal hills, Guwahati, Assam, India.
Coordinates: 26.166426°N 91.705509°E.
Built: 8th century.
Height: 561 feet.
Deity: Kamakhya.
Architecture Style: Nilachal type.