Krop Tor script
From Tardis Wiki, the free Doctor Who reference
The Krop Tor script was an ancient writing system for an unknown language. It probably orginated on the planet Krop Tor. The language was so old the not even The Doctor's TARDIS could translate it.
The script was found on old parts of pottery and a notebook, found on Krop Tor by the Galis Expedition. (TS: Tardisode 8, DW: The Impossible Planet)