For more interesting reading check this from Dr. R. Nagasamy - Underground Secret Treasuries in Ancient Temples The last para is quite hair raising..." Lastly the late T. G. Aravamudan, the noted numismatist, and the author of `Portrait Sculpture in South India' narrated to this author on more then one occasion, his experience in the Great temple of Tanjore, In his young age, he was once taken blind folded, through an underground passage in the Great temple of Tanjore. When he reached the secret chamber and his eyes opened, he found a large number of Chola bronzes of exqusite beauty stored there. He was able to recollect that the passage through which he went seemed to be between two granite walls. Later he made several attempts to locate the entrance to the passage in the temple but failed. It is not unlikely that many such underground secret treasure chambers exists but their discovery will remain only a chance find. "