Legend of Mount Bromo
There is legend related to Mount Bromo and the region of Tengger. According to this legend, there was a 15th century princess named Roro Anteng from Majapahit who started a principality with her husband Joko Seger. They named the principality Tengger, an amalgam of the last syllable of both their names.
Being childless for many years, the royal couple made a trip up Mount Bromo to seek the help of the mountain gods in granting them a child. The gods agreed to their request, telling them that they would have 25 children, but demanded that they sacrifice their final child. Together, the couple had 24 children.
When the last and final child was born, Roro Anteng refused to sacrifice it. The mountain gods sent fire and brimstone until she finally relented. After the child was thrown into the crater of the volcano, his voice was heard asking that an annual ceremony be performed to appease the gods. The ceremony was still being performed to this day. It takes place on the 14th day of the full moon Kesodo, according to the Tenggerese calendar. Rice, fruits, vegetables, flowers and livestock are offered to the mountain gods.