The cache is located at the posted coordinates, and you are free to sign the log. To claim the smiley, you must have found at least 1 cache in 25 different states. According to the guidelines for challenge caches, the difficulty rating is based on the challenge, the terrain rating on the challenge cache location. The difficulty and terrain ratings are 3-3 because it is hard to find a cache in 25 different states without some serious traveling, not because this cache is hard to find. This cache location all by itself would be a 2-2
