To log this CHALLENGE as a "find" and get the smilie, you must have obtained/earned at least 150 geocaching souvenirs (and find and sign this cache too, of course). The cache location is in a park that will have several different challenges.
This can be found (and verified) in your geocaching.com profile/Dashboard - Souvenirs - count the number of souvenirs you have; your Project-GC profile - My Profile Stats - Souvenirs tab - view your total number of souvenirs; or use the Project-GC checker link below (profile name and "Run checker").
You may find this cache and sign the log at anytime, but don't log as a find until you qualify.
All logs will be verified and logs not meeting the criteria will be deleted.
Difficulty is in the challenge and NOT the hide! Park hours apply.