People gather around the area round every year (June or July) in the Bromo Volcano to join the so called Yadnya Kasada which festival is celebrated by the Hindu Tenggerese people, an ethnic group in Eastern Java. These people go to Mount Bromo to make offerings to the Gods to thank them for the good harvest. Fruits, vegetables, flowers, rice, money, chicken, and livestock are thrown into the volcano's caldera. Local people believe that this ritual will give them blessings and protection from their gods and ancestors.


The volcanoes within the caldera are surrounded by a vast area of sand called the Tengger Sand Sea.