The Tar Monster (1978) — The Scooby-Doo Show Cartoon Episode Guide
Stoner, chief assistant to Professor Brigston, frightens the native workers away from the discovery of the ancient city of Byzantius by masquerading as The Tar Monster, a legendary creature that protects the city. Scooby, Daphne, Shaggy, Velma and Fred, invited to see the ancient city by Professor Brigston, catch Stoner in the act and turn him over to the authorities, and give the treasures he found to the Turkish government.
Watch “The Tar Monster” on video at Big Cartoon DataBase

