It is indeed curious to note that the temple of Kamakhya is unique when compared with the Devi temples in other parts of India, for it enshrines no image of the goddess. There is a cave within the temple, in a corner of which stands a block of stone on which the symbol of a yoni is printed. The yoni symbol, so sculptured, is kept moist from the oozings of a natural spring within the cave. The devotees touch it and offerings of the flowers and leaves are made on it.
The origin of the creative symbolism of the yoni has been differently interpreted by different texts. While the Kalika Purana-lives an amorous interpretation of the yoni,the Yogini Tantra emphasises its creative symbolism. Devi herself is said to have asked Siva to explain who Kamakhya was and he relates the following story about the origin of Kamakhya:
"In the primeval times Brahma after having created the universe arrogated to himself the supreme creative force. The goddess noticed this arrogance of Brahma and created out of her own body a demon named Kesi. As ‘soon as born the demon rushed towards Brahma to swallow him up. Brahma fled in terror in the company of. Visnu. The demon then built a city called Kesipura and began to harass the three worlds. There was all around the echo of a sound-‘Kill Brahma’. Brahma cast aside his vanity and in the company of Visnu offered a hymn of propitiation to Kali for the relief of the worlds from the tyranny of Kesi.