The largest and simplest of the temples is Kalaram Mandir, It houses a black stone image of Rama, hence the name. The temple is made by complete black stones, which has four doors facing East, West, South and North and the apex made up of 32 tons of gold. In 1930, Dr. Ambedkar performed Satyagraha, to allow the entry of Harijans into the temple.
The temple derives its name from the statue of Lord Rama that is black. The literal translation of kalaram means black Rama. The sanctum sanctorum also houses the statues of goddess Sita and god Lakshmana. Thousands of devotees visit it every day.