[radu]

Most likely it is, but they don’t have to be perfect to be appreciated. It would be nice if they’d realized that.
At least we know they exist, and what a cool find it is.

[SunkenCiv]

This one looks nearly intact; while I do really, really like mosaics, they, uh, vary widely in quality. The Romans and the people in the Roman Empire really liked things colorful. Mosaics were also used to communicate more mundane messages in a less colorful style, like this famous entrance vestibule floor:

A glass shield now protects the House of the Tragic Poet, where tourists can see the dog with the inscription "Cave Canem" - Latin for "Beware of the dog". ©EPA