Explanation: Pichavaramnear Chidambaram in Cuddalore District, Tamil Nadu, in South India. The nearest railway station is Chidambaram from where it is accessible by road.

• The Pichavaram Mangrove Forest near Chidambaram is the world’s second largest mangrove forest.
• Pichavaram mangrove forest is located between two prominent estuaries, the Vellar estuary in the north and Coleroon estuary in the south.
• The Vellar-Coleroon estuarine complex forms the Killai backwater and Pichavaram mangroves.
• The backwaters are interconnected by the Vellar and Coleroon river systems and offer abundant scope for water sports such as rowing, kayaking and canoeing.

Source: https://cuddalore.nic.in/tourist-place/pichavaram/