- For the video game, see The Flintstones: The Treasure of Sierra Madrock.
Finding "treasure" on the way home from Rock Vegas tests Fred and Barney's friendship.
Returning to home after a vacation in Rock Vegas, Fred, Wilma, Barney, and Betty lose intended direction and stop at Goldrock City on the Western frontier, where a general store owner named Zeke conspires with an elderly prospector named Zack to swindle Flintstone and Rubble into purchasing a claim to a bogus gold field (Hangman's Gulch) with the $300 that they won in Rock Vegas. Wilma and Betty are not convinced that there is any gold to be found at Hangman's Gulch and are certain that Fred and Barney have been duped yet again by unsavory characters.
So, using their own Rock Vegas winnings, they buy some gold nuggets and place the nuggets in the river being panned for gold by their spouses. As Wilma and Betty have hoped, Fred and Barney "strike gold", jump for joy, and carry their presumed yield to Zeke for weighing and appraising. As predicted by Wilma and Betty, Zeke and Zack want the claim back, now that they believe there is truly gold on the site.
However, Fred and Barney, desiring more gold, refuse Zeke and Zack's $700 offer to repurchase the claim, and are targeted not just by Zeke and Zack but also by a pair of ruffians named Evil Eye and Snake Legs, for unlawful confiscation of the claim. Zeke and Zack trick Fred and Barney into standing on the wooden observation deck to a local tourist attraction- a waterfall. They cut the deck's suspension ropes to send Fred and Barney careening into the tumult.
Wilma and Betty have followed their cavemen to the waterfall and use long hooks while standing on a bridge spanning the river below the falls, to pull Fred and Barney from the raging white water. Fred and Barney, now aware that Zeke and Zack wish to them mortal harm, are informed by their wives of the true source of the gold nuggets. They discard the claim, and Zeke, Zack, Evil Eye, and Snake Legs fight each other for possession thereof, as Flintstones and Rubbles hasten to depart Goldrock City.
- Fred Flintstone
- Wilma Flintstone
- Barney Rubble
- Betty Rubble
- Pebbles Flintstone
- Bamm-Bamm Rubble
- Zack and Zeke (only appearance)
- Stick Legs and Evil Eye (only appearance)
- Goldrock City General Store (only appearance)
- Hangman's Gulch (only appearance)
- Claim (only appearance)
- Phony gold rocks (only appearance)
- Uraniumrock (only appearance)
- Mining equipment (only appearance)
|Alan Reed||Fred Flintstone|
|Jean Vander Pyl|| Wilma Flintstone|
|Mel Blanc|| Barney Rubble|
|Henry Corden|| Zack|
|Gerry Johnson||Betty Rubble|
|Don Messick|| Bamm-Bamm Rubble|
- The two sets of villains are Zack and Zeke, and Stick Legs and Evil Eye.
- The title of this episode is a spoof of the novel, The Treasure of the Sierra Madre.
- None known.
|Season 6 of The Flintstones|
|"No Biz Like Show Biz" • "The House That Fred Built" • "The Return of Stony Curtis" • "Disorder in the Court" • "Circus Business" • "Samantha" • "The Great Gazoo" • "Rip Van Flintstone" • "The Gravelberry Pie King" • "The Stonefinger Caper" • "The Masquerade Party" • "Shinrock A Go-Go" • "Royal Rubble" • "Seeing Doubles" • "How to Pick a Fight with Your Wife Without Really Trying" • "Fred Goes Ape" • "The Long, Long, Long Weekend" • "Two Men on a Dinosaur" • "The Treasure of Sierra Madrock" • "Curtain Call at Bedrock" • "Boss for a Day" • "Fred's Island" • "Jealousy" • "Dripper" • "My Fair Freddy" • "The Story of Rocky's Raiders"|