Yogini Tantra

The Goddess Kali, who has formidable teeth, is supreme and eternal; her body is anointed with blood. She is mounted upon a Shiva-preta the corpse of Shiva and stands upon Mahakala. (13)
Her left foot is upon the heart of the corpse, and her right foot adorns all the worlds. (She is the Goddess in the form of Shiva). She has the radiance of ten million suns and illuminates the entire universe. (14)

She is as bright as a cluster of lightning, adorned with matted hair, brilliant like a mountain of silver, and has a body like a mountain of crystal. (15)

She is digambara naked, has a terrifying appearance, is adorned by the sun and moon, is covered with various ornaments, and is radiant with body hair that looks like glowing gold. (16)

She is endowed with yoganidra divine yogic sleep, has beautiful eyebrows, and a smiling lotus-like face. She is eternally engaged in the viparitarati reversed sexual position with Mahakala. (17)
She possesses great power, illuminating the entire cosmic egg. She is surrounded by the terrifying howls of jackals and appeared at the time of cosmic dissolution. (18)