Punarjani Guha
Punarjani Guha is a 150-metre natural tunnel in a rocky cliff situated in Thiruvilwamala in Thrissur District of Kerala state in southern India.It is believed that performing noozhal or crawling through the tunnel from one end to the other will wash away all the sins and thus allow one to attain Moksha, or freedom from rebirth.[2][3][4] According to legend, Lord Parashurama killed Kshatriya clans at the site of modern-day Vilwadrinatha Temple.At 4 AM on Ekadasi day, the priests open the temple after having a bath in Bhagavathichira, and start some poojas at the entrance of the cave.Later, the devotees should take bath in Papanasini (not to be confused with the river with the same name at Thirunelli), Pathala Theertham, Ambutheertham, and Kombutheertham in that order, and should enter the cave without drying up.In spite of this huge darkness and location, it is a wonder that there are no ferocious animals and reptiles here, and no one has died ever inside the cave.