The Little Mount (locally known as the Chinnamalai -the small mount), is a rocky prominence where Thomas is believed to have chosen a tiny cave as his home and led a spartan prayerful life in solitude, often praying on the top of the hill and preaching to the crowds. Today, this monument hewn out of rock with its small narrow opening has an altar with the image of St. Thomas used as a prayer home. To the east of this cave is an opening, supposedly that of a tunnel through which he fled from his alleged assailants to St. Thomas Mount. The Christian faithful believe that the opening (window) was miraculously made and through this Thomas escaped from his enemies who were waiting in front of the entrance. Near the tunnel's entrance is a clearly visible palm print. This hand-print and the footprint at the foot of the hillock are believed to be those of Thomas himself.
Little Mount has an ancient church built by the Portuguese in 1551. At the entrance is a portrait of Thomas and Portuguese inscription, while masonry cross at the top of the hill marks the spot where Thomas supposedly preached.