Aztec temple (The Fiesta Host is an Aztec Ghost)

The Aztec temple upriver from Cinco, Mexico is an ancient ruin.

Season one
Professor Stonehack and his wife Elina found treasure in the temple they wanted to steal. The gang got locked into the looted treasure room when they came to investigate, but they managed to open a secret door by reflecting moonlight onto it.

Appearances

 * The Scooby-Doo Show
 * The Fiesta Host Is An Aztec Ghost