The steps were found a few days ago by workers engaged in digging a trench to install bollards as part of strengthening the security of the temple where invaluable treasure is kept in underground vaults.
The trench, measuring 1.5 m in width and depth, was dug across the road around 50 m away from the gate.
The works were stopped after three granite steps were found on one end of the trench and remains of a foundation on the other end.