"Here the Jain temple cities stand out. These were built, with elaborate ornamentation, from the tenth century on, and they are built in the same style to this day. The city of Satrufijaya, Palitana, is the most sacred of the Jain temple cities: most of its nearly 900 temples date from the sixteenth century; but the original temples, built in the eleventh century, were completely destroyed by the Muslims. Similarly, the town of Ajmer, founded by Ajaipal, one of the Cauhan kings, was sacked in 1024 AD by Mahmud of Ghazna, and again by Muhammad Ghuri in 1193; it had a Jain college, built in 1153, which was turned into a mosque by putting a massive screen of seven arches in front of the pillared hall which was left standing: 'the hut of two-and-a- half days', built supernaturally, according to Muslim tradition, in two-and-a-half days. Other great Jain temples, like the one at Ranakpur, in Rajasthan, built around 1439, were equipped with holes in the ground leading to cellars where the images could be hidden from the Muslim iconoclasts. We know of underground Jain temples which were built for the protection of images in Mughal times, and it is quite likely that these existed in our period as well, or that underground portions were beginning to be added to temples, with narrow passages as their entrance... In a Jain poem we hear of another image, which was fashioned in the city of Kannanaya in the Cola country in 1176; when in 1192 AD Prthiviraja, the Cauhan leader, was killed, Ramadeva sent a letter to the Jains, stating: 'the kingdom of the Turks has begun; keep the image of Mahavira hidden away' . This image, accordingly, was kept concealed in the sand at Kayamvasatthala and remained there for about sixty years."