uncoverable
adjectiveUK /ʌnˈkʌvərəbl/
US /ʌnˈkʌvərəbl/
Something that cannot be found or seen, even if you look hard.
The treasure was uncoverable because it was buried under a huge rock.
OTHER MEANINGS
2. Not able to be revealed or made known.
The truth about the old case seemed uncoverable.
3. Not able to be exposed or laid bare.
The roots were uncoverable beneath the thick concrete.
4. Impossible to detect or notice.
The tiny crack was uncoverable without a microscope.