Base on Minister of Forestry decree 26th February 1992 number 238/Kpts-II/1992, Blambangan peninsula with other famous name Alas Purwo National Park the area is considered still sacred or holy by people, and many caves are used to meditation. In side the area is a temple that by Hindus are used to going worship or having ceremony called Pagerwesi and it's usually done every 210 days.