Ta Keo was the first ‘temple-mountain’ to be constructed entirely out of sandstone. Its construction began around 975; it served as Jayavarman V’s (968-c.1000) state temple, but the construction was interrupted after his death. It was later resumed by his successor Jayaviravarman (1001-1002) and Suriyavarman I (1002-1010). From one of the Angkorian inscriptions, Ta Keo temple was referred as 'Hemasringagiri' or 'Mountain of the Golden Peaks'. One explanation for the unusual minimalism and simplicity of the stonework is that the monument was never completed.