The Khejari tree is considered the Kalpvraksha of Thar. On 28th August, 1730 the Maharaja of Jodhpur ordered to cut the Khejari trees in the village Khejrali. It was opposed by the villagers under the leadership of Amrita Devi. She sacrificed her life for the protection of the Khejari trees. About 363 villagers gave up their lives. This event is said to be the Khejarli Sacrifice movement. A monument has been constructed in the memory of martyrs of Khejarli village, where the Vriksh Sahid Mela (fair) is organised every year. In the memory of Amrita Devi, the Black Deer Sanctuary has been established in Jodhpur. The state government gives Amrita Devi Awards every year in the field of awareness for environmental conservation.