The rarely-seen animated film special "The Flintstones on The Rocks" is currently available for viewing on YouTube thanks to CN90s.
The special aired in 2001 on "Cartoon Network's Cartoon Theater" and is based on the original 1960's series.
The character designs and production art pay respect to their roots as well as the script.
The basic storyline has Fred and Wilma's marriage falling apart so The Rubbles take them on vacation to try and fix things. A jewel thief gets his bag mixed up with Wilma's and Fred uses the diamond to win his wife back, but the thief has other plans.
The Flintstones on the Rocks (2001)
Jeff Bergman - Fred
Tress MacNeille - Wilma
Kevin Michael Richardson - Barney
Grey Delisle - Betty
Hoyt Curtin, Joey Altruda, Skip Heller
Character Design - Craig Kellman
Background Design - Jim Worthy
Background Color - Don Watson - Tim Maloney
Written & Storyboards by
Cindy Morrow, Clayton McKenzie Morrow, Chris Savino, David Smith
Animation Direction by Robert Alvarez
Directed by David Smith & Chris Savino
Supervising Producer Genndy Tartakovsky