We have all been to the scry-free zones in the server, be it Cordor, Guldorand or Dis.
Nevertheless, the masters of illusion and deceipt, tucked away in a mysterious Grotto under the dwarven kingdom have no such zone to hide all their inventions, patents and secrets. The RP of the Great Grotto highly warrants for a scry-free zone, area or room.
My suggestion would be to add such a place in the Great Grotto.
Cheers!