Mystery!

Underneath the city of old Istanbul, there is a football-field-sized cavern supported by dozens of columns, some decoratively sculpted. This was the cistern of Istanbul, making it nearly impossible to hold the city siege: there never was a shortage of fresh water.

Hardly anyone veer really got a good look at the place, it being filled with water to varying degrees, which makes one scratch their head on several levels when deep inside the place, one comes across this:



It's a pedestal to one of the deeper columns, sculpted to look like Medusa. Apparently it came from somewhere else...no one knows just where. But why is it laid on its side? And what about this one? Why is it upside down?:



Some think these were brought and laid for purposes of spiritual protection, but that doesn't explain why they are laid this way.