I recorded this a few months ago on my alt and forgot I had recorded it and found it in my recorded folder.
[video=youtube;n4tuo1iDRwM]http://www.youtube.com/watch?v=n4tuo1iDRwM[/video]
I think this is the only time I recall even seeing a fountain in longa desert ruins and of course it is getting submerged in sand. Also apparently muddy water heals wounds.