The oldest surviving frescoes of the historical period have been preserved in the Ajanta Caves with Cave 10 having some from the 1st century CE, though the larger and more famous groups are from the 5th century. Despite climatic conditions that tend to work against the survival of older paintings, in total there are known more than 20 locations in India with paintings and traces of former paintings of ancient and early medieval times (up to the 8th to 10th centuries CE), although these are just a tiny fraction of what would have once existed. The most significant frescoes of the ancient and early medieval period are found in the Ajanta, Bagh, Ellora, and Sittanavasal caves, the last being Jain of the 7th-10th centuries. Although many show evidence of being by artists mainly used to decorating palaces, no early secular wall-paintings survive.