If you find an area of your garden where you hit bedrock quickly, it is extremely difficult to improve this depth.
You want your depth from the top layer to the bedrock to be as deep as possible.
Camp Cartoon Network: This kids' section features popular cartoon characters in rides such as Spacely's Sproket Rocket, Scooby Doo's Mystery Machine, Yogi's Yahoo River, Rocky Road Rescue Service, and Bedrock Boulder Roller.
Alapalooza features "Bedrock Anthem", a song that describes The Flintstones in the style of the Red Hot Chili Peppers' "Give It Away".
Bedrock - Solid rock, usually too deep down to be found in average yard digging.