Non veni pacem mittere, sed gladium.
Jeez, swimming holes like that are clothing optional. Down here in Texas there's been many a time when I was younger where we'd shed clothes and jump in the cattle trough or stock pond to cool off. Then get dressed again and keep working.
I blieve that's a stock tank - which is to say an unheated pond. If you were in there when it started snowing you'd soon wish you were dry and dressed, I'll tell you what.Guess how I know that....
Beautiful picture. It conveys the sense of serenity perfectly.