The centre of Padanilam  was known as otha varambu. Until the 1980s, there were two "Kalithattu" (a raised square platform fortified with four heavy stones at the borders).
At the core of Padanilam  lay the area known as otha varambu. For many years, until the 1980s, there existed two structures called Kalithattu, which were elevated platforms surrounded by four substantial stones.