Maridjan led ceremonies to appease the spirits of the volcano, and one of his most important duties was the performance of the annual Labuhan sacrificial ceremony dedicated to the spirits of Mount Merapi.
Maridjan led ceremonies to appease the spirits of the volcano by presenting them with offerings of rice and flowers in and around the crater. One of his most important duties was the performance of the annual Labuhan sacrificial ceremony dedicated to the spirits of Mount Merapi. 
