Puzzle Caches (sometimes called a mystery cache) is one type of Geocache. Many resources exist to help solve puzzle caches. The type of puzzle used to conceal the true coordinates are nearly infinite leaving many solvers no starting point. Provided here are some geocache puzzles around the San Diego area. Some are solved and some are still in process.
NOTE:These contain spoilers and/or solutions. Don't look if you don't want to know.
These are not solved