Stone reliefs depicting the classical form of Nataraja are found in numerous cave temples of India, such as the Ellora Caves (Maharashtra), the Elephanta Caves, and the Badami Caves (Karnataka), by around the 6th century. Archaeological discoveries have yielded a red Nataraja sandstone statue, from 9th to 10th century from Ujjain, Madhya Pradesh, now held at the Gwalior Archaeological Museum. Similarly, Nataraja artwork has been found in archaeological sites in the Himalayan region such as Kashmir, albeit in with somewhat different dance pose and iconography, such as just two arms or with eight arms. In medieval era artworks and texts on dancing Shiva found in Nepal, Assam and Bengal, he is sometimes shown as dancing on his "vahana" (animal vehicle) Nandi, the bull; further, he is regionally known as "Narteshvara". Nataraja artwork have also been discovered in Gujarat, Kerala and Andhra Pradesh.