A series of challenge cache which require you to have found a given number of other challege caches, all by Kitey.
10 The Challenge Cache Challenge : Brass (Done 08/11/2011)
20 The Challenge Cache Challenge : Bronze (Done 23/01/2012)
35 The Challenge Cache Challenge : Silver (Done 28/08/2012)
50 The Challenge Cache Challenge : Gold (Done 28/08/2012)
75 The Challenge Cache Challenge : Platinum (Done 28/08/2012)
See my Challenge Caches web page for the full list of challenge caches I've completed.
Note: Finds #36 and #45 are disallowed (see below) for the above challenges.
The below are considered trivial and/or the qualification for it can't be verified by the presence of a geocache log and do not qualify for the above challenges.
12 Seconds of Caching Challenge
Back to the Beginning Challenge