Larung saji or better known as Yadna Kasada is typical of the thanks giving day. At the ritual the Tenggerese people around Bromo Tengger Semeru National Park, climb up the mountain in order to make offerings of fruit, rice, vegetables, flowers and sacrifices of livestock to the mountain gods by throwing them into the caldera of the volcano.

The origin of the ritual lies in the 15th century legend where a princess named Roro Anteng started the principality of Tengger with her husband, Joko Seger. The couple was childless and therefore prays the assistance of the mountainís gods. Fortunately, the gods granted them 24 children but stipulated that the 25th child, named Kesuma, must be thrown into the volcano as human sacrifice. The gods' request was implemented. The tradition of throwing sacrifices into the volcano to appease these ancient deities continues today.