Adjective
unexcavated (comparative more unexcavated, superlative most unexcavated)
Not excavated.
It is now considered unlikely that a pre-Roman city existed, but as some of the Roman city remains unexcavated, it is still just possible that some major settlement may yet be discovered. Source: Internet
The excavator left some features unexcavated, allowing a view of the original Assyrian construction. Source: Internet