Lacking any modern arrangement while living or traveling in the wild, or just roughing out, a woman is taking a bath in a natural body of water (sea, river, lake, pond, waterfall...) in the outdoors.
Inevitably, a man is going to stumble on her while she is naked. If not spotted, even the most chivalrous men will have a hard time looking away. Truth in Television. If spotted, expect lots of [...] [tvtropes.org]