An important stop during the pilgrimage is the mud volcano called 'Chandrakup', literally 'Moon Well'), mainland Asia's largest mud volcano. It is considered holy and is addressed as 'Baba Chandrakup'(literally "Father Moonwell"). The volcano is filled with mud, instead of magma, hence the term "mud volcano". It is considered to be the abode of demigod Babhaknath. It is one of the few sites of active volcanic activity in the Asian mainland. The mud is semi fluid and sometimes it spills over and aggregates and cools into hillocks which surround the site.