This cache IS located at the coordinates given, however you must meet the criteria to log this cache as "found". To log this cache, you must have found 10 Letterbox Hybrid caches in one CALENDAR day.
I have already released a challenge for finding 5 in one day (GC5FCPR), something that is easier done, especially in towns with multiple LBH caches. This challenge will take a little more planning to do, and possibly more time. Some LBH caches require you to do special puzzles, or use clues based upon your surroundings to find them. They will typically have a stamp inside the final container, giving you something to prove you were there, or add to your notebook if you enjoy collecting the stamps.
Keep in mind all challenges are optional, so you do not have to complete this challenge unless you want to. Challenges are meant to be an extra way for you to go geocaching other than the usual finding one cache after another. Challenges are also a nice reward for those who have already completed the challenge. This one specifically can be difficult to do unless you find the right place. I will mention the Colorado Star out in the Pawnee Grasslands, or Greasespots' A-Z letterbox series down in Golden, CO as two of the easier places to complete this challenge in the area.
To verify your qualifications, make sure to add in your log the date you completed this challenge as well as the GC codes for each of the caches you found. You may post a screen shot of your profile page or a GSAK list, whichever method works easiest for you, so long as the required information is there. If you are unable to provide the required information in a timely manner, I may delete your log. FTF status is dependent upon quick verification so make sure if you plan on going for FTF that you have your information ready to go.
All my challenges are set up so that you may do a "write-note" and say you have visited the log, and then you may mark it as found once you do qualify for this challenge. That way you don't have to revisit the cache location, which is especially useful for those of you who are visiting or are from out of town.
Remember challenges are meant to be fun and rewarding, so I hope you enjoy this challenge and keep an eye out for others in the area!