A Liars Cache is a nickname used to refer to a geocache where the owner specifically lies about details in the cache to misdirect the finder.
There are different ways that a Liars Cache may "lie" to the finder. Examples include when the geocache is given a very high Difficulty or Terrain rating even though it should be low, or the size rating is set to large when it is really a micro. The Geocacher could be looking for a tiny 5 star geocache when it really is a large ammo box in the woods up in a tree. Sometimes, the owner will write up detailed descriptions that make it seem harder than it really is. An example of such a description:
Perhaps the toughest challenge you'll ever have to face.
Planning is a must...bring equipment to help you solve this quest.
- There are no trails
- You will have to bushwhack the entire way
- Water is involved
- Elevation changes could be a factor
- Rocks/boulders/cliffs/caves may be involved
- Wear proper footwear
- Bring water to drink
Once you reach the location seek out the container that holds the clues to finishing this adventure.
Liar's Caches typically cause problems for certain types of Challenge Caches. In particular, both Fizzy Challenges and Difficulty/Terrain Challenges will often include a rule prohibiting Liars Caches. Since the most common form of Liars Cache is to lie about the D/T rating, geocaches could easily make both challenges considerably easier for many finders by purposely putting high D/T ratings, even when not warrented.