well its not really religious.. but some people believe it is .. this is a festival of a local saint "bari imam" .. anyway it happens every year and a lot of 'malangs' (people who have given up worldly goods to attain spirituality) come here, along with flocks of people from all over the country. (we do have plenty of these festivals all year around everywhere). anyway to make it simple its like the WOODSTOCK of the 3rd world people :P there is music there are drugs :P
btw the malangs come here walking from all over the country and sometimes even the world.