Thomas called the Twin was one of the twelve Apostles of Jesus, its believed that he attained martyrdom in Chennai. A shrine dedicated to “Our Lady of Expectation” (Mother Mary) was built in 1523 on top of the mount. The altar of this shrine was built on the spot where St. Thomas’ death has occurred. At the northern foot of the mount, is a gateway of four impressive arches surmounted by a cross bearing the inscribed date 1547. A flight of 160 steps leads up to the summit of the mount. The Flag pole spotted in the top of the Hillock.