One of the first times I went there, I had recently started experimenting (to a very mild degree) with fashion. In this case, I was trying out wearing sort of a chain necklace. Unfortunately, while I was swimming, it broke and fell off, so I figured it to be lost forever.
The next year, I came back to swim in the same spot, having completely forgotten the necklace, but was very pleased to discover it had gotten lodged under a rock and thus not traveled far at all from where I originally lost it.