The phrase "buried treasure" refers to valuable items or wealth that is hidden or buried underground, often in a secretive or unknown location. Full definition
It means all the space for you and your kids to run around and hunt for buried treasure in the sands — which there is plenty of! (havebabywilltravel.com)
In the video game version, participants hunt for buried treasure in a circular field, also using visual cues from the environment to remember where the treasure is hidden. (gladstone.org)
In it, players take on the roles of two divers in search of buried treasure when their tanks begin to run low on air. (educationworld.com)