Yes, it's a guard rail. No, it's not what you might think.
Before this cache was archived by the previous owner, it was the first cache I found in Hawaii, when I moved here in 2017. So, this location is special to me. I originally redesigned it as what I thought was a clever deception. However, muggles still managed to outsmart me. Therefore, I have come up with this upgraded version of the cachetainer. Hopefully, it will be invisible to muggles but bring joy to cachers with highly observant eyes! 👀