The word "gunungan" in Javanese language means "like a mountain", or "similar in shape to a mountain". Gunungan is one of the physical manifest of thankfulness offerings ("sajen wilujengan" in Javanese) which is particularly made for specific purpose in a traditional ceremony such as "Wilujengan Negari" on every garebeg.
Gunungan Kutug or Gunungan Bromo is made once every eight years on the year of Dal during the ceremony of Garebeg Mulud Dal. The shape of this gunungan is similar to Gunungan Wadon, however on the top of it, there is a hole to place "anglo" (a traditional stove) containing "arang" (arang = charcoal) for burning "kemenyan", in order to create heavy smoke when the wind blows.
The "Pajangan" (content of offerings) comes from various of colorful cakes, similar to pajangan on Gunungan Lanang, with another variation. Below there is "kain bangun tulak", and the gunungan is placed on the giant dish structured from wood (more or less 2x1,5 meter).