This is my little free library w/ my geocache, Wiggin's Challenge. From the picture the door is very obvious. However, I have had many experienced geocachers have difficulty locating the hide, and 3 of 29, signed my library guestbook instead of the official log in the Ender's Game container; I have recently noted "Not the geocache log" in the guestbook. From what I have seen, the flow of traffic to the cache comes from the opposite side of the cache, so people are unable to see it right away. Based upon my description of my cache, many possible books it could be hidden in, and having a LFL guestbook, added a small degree of difficulty. I have appreciated the positive feedback, the increased foot traffic, and meeting many interesting cachers.