[s1e1] The Ghastly Ghost Town • Official

A giant mechanical dinosaur that roars and moves via pulleys and tape recordings.

The New Scooby-Doo Movies (TV Series 1972–1973) - Episode list [S1E1] The Ghastly Ghost Town

The "ghosts" were actually (the park manager) and his accomplice Rhino . A giant mechanical dinosaur that roars and moves