Well, I don’t know about prominent, but I think that seeing them (especially if I’m wearing a tanktop) is kinda nifty. Sometimes I will hunch my shoulders when I look at myself in the mirror (because it makes them more visible), but then I end up looking like a hunchback. I haven’t had to do that much since I moved to this state–partly because it’s not quite nice enough for tank tops yet, and partly because I’ve been losing weight.
I think they’re more visible if a woman has a fine bone structure. I don’t–I like to say I come from peasant stock.
Here’s my version of your “Great Plains”. You know the back of the ankle, and how on most normal people, the Achilles tendon is rather prominent? There’s little flesh on either side of it, so it seems to stick out? Well, I don’t have that, and I always wanted it to show.