Bonalu or Goddess Mahankali Varun devi bonalu[1] (Telugu: బోనాలు ) is a Hindu Festival, Goddess Mahakali is worshiped.[2] Bonalu is an annual festival of Telangana celebrated in Twin Cities Hyderabad, Secunderabad and other parts of Telangana.[3] It is celebrated in the month of Ashada Masam, in July/August in Hyderabad and in (Shravana) Shravanamasam,in August/Sept in Warangal and other parts of the Telangana State. Special poojas are performed for Yellamma on the first and last day of the festival.[4] The festival is also considered a thanksgiving to the Goddess for fulfillment of vows.

The word Bonam is a contraction of the word Bhojanam, a Sanskrit loanword which means a meal or a feast in Telugu, is an Offering to Mother Goddess. Women prepare rice cooked with milk and jaggery in a new Brass or Earthen Pot adorned with Neem leaves, turmeric, and lit a lamp on the top of the Pot. Women carry the pots on their heads and make an offering of Bonam along with Turmeric-Vermilion,Bangles and Saree to the Mother Goddess across the Temples..