[ghewgill]

There's a pass on the Inca Trail in Peru called "Dead Woman's Pass" (https://en.wikipedia.org/wiki/Warmi_Wa%C3%B1usqa). I have to assume this is a similar warning.

[martinpw]

I seem to remember a guide stating that this pass has that name because there are two equal sized hills near it and so, umm, it has the profile of a woman lying down on her back, rather than implying that a woman actually died there.

[ghewgill]

That also seems like a reasonable explanation. I never got any of the background story from our guides.