Challenge Cache: A type of cache where you not only have to sign the log, but also complete a challenge. This cache is located at the posted coordinates.
This Challenge: This is the 1 by 1 Challenge. In order to qualify you must find 100 1/1 caches. This can be of any cache type, but it must be 100 unique caches that are each 1 difficult and 1 terrain.
Check your qualifications here:

My qualifications: ✅
User has 868 finds (100 needed).Filters:( terrains (1) , difficulties (1) )