Everyone Needs a Fake Rock cache Traditional Cache

Another installment in my "Everyone needs a ..." series, celebrating ubiquitous types of hides. If you have done any of the other caches in this series, you have a good idea of what to expect.

Why is it that fake rock caches so often have no cache size chosen? If they're the standard grey plastic fake rock so commonly used by cachers, they invariably have micro containers inside. I've never understood this. 

Anyway, seems like everyone has a fake rock cache, so it's a no-brainer addition to this series.