I just wondered if by reconstruction you meant it was "recreated" using non-original stones and did climbers over the ages cause the original knocking down. I would've thought that the renovators would've noticed rock-art especially if it is such a rarity in the area. BTW you should've voiced your opinion at the "disrespect" at the time even though you didn't feel it was harming the (reconstructed)stones, your associates might've had a little respect for your feelings and not investigated the stone quite as thoroughly in your presence.