Solution:S. R. Rao, was an Indian archaeologist credited with discoveries of a number of Harappan sites including the port city Lothal and Bet Dwarka in Gujarat.Lothal in present day Gujarat Is considered a port from the Harappan civilization.
In Bet Dwaraka, he unearthed what he claimed were parts of a submerged city that was built by Krishna from the Mahabharata.