THE CACHE IS AT THE LISTED COORDS
To log this cache you need to find a total of 500 stars in one day. Thus you add your Difficulty and your Terrain stars together to get 500.
Here is an example of what it may look like:
There is a GSAK Macro called 'Star Challenge' for those that use that program.
You may find this cache prior to qualifying. Just sign the log and write a note on the cache page. Then when you qualify you may claim the find on the cache.