According to the Reykjavik Grapevine, a woman described as "Asian, about 160cm, in dark clothing and speaks English well" was listed as missing Saturday near the Eldgjá volcanic canyon in southern Iceland.
A search continued through the weekend with reports saying she got off a tour bus and never returned.

It turns out the woman merely changed clothes during the bus stop, and after she returned, those on the bus didn't recognize her.

When the description of the "missing" woman was circulated, apparently the lady who changed her outfit didn't recognize the description of herself. So she joined the search party.