During the reign of which Pallava ruler Ratha temples at Mahabalipuram were built?

The construction of the five rathas is traced back to the 7th century during the reign of King Mahendravarman I from 600–630 CE and his son Narasimhavarman I from 630–668 AD of the Pallava dynasty. Construction work of the structures stopped after the demise of Narasimhavarman I in 668 AD.