Scooby-Doo, Where Are You! - Season 3 - Eps 14: Don't Go Near the Fortress of Fear
The gang head to Puerto Rico to go on holiday. They visit an ancient fortress where the ghost of General Juan Carlos, who guards the El Moro Fortress, warns them to stay away.
About Scooby-Doo, Where Are You!

Title: Scooby-Doo, Where Are You!
First Air Date: 1969-09-13
Last Air Date: 1978-12-23
Status: Ended
Rating: 7.8/10 (from 719 votes)
Language: EN
Seasons: 4
Total Episodes: 41
Network: ABC CBS
Genres: Animation, Mystery, Comedy, Kids, Family
Production Companies: Hanna-Barbera Productions
Synopsis
Fred, Daphne, Velma, Shaggy, and the talking dog, Scooby-Doo, travel on the Mystery Machine van, in search of weird mysteries to solve.
Cast

Casey Kasem
Shaggy Rogers (voice)

Don Messick
Scooby-Doo (voice)

Frank Welker
Fred Jones (voice)

Heather North
Daphne Blake (voice)

Pat Stevens
Velma Dinkley (voice)