There’s a bit of conjecture about what the g-spot actually is. I believe that it’s not a separate part of the anatomy. Rather it’s part of the internal structure of the clitoris. Think of the clit as being like an iceberg. The visible tip (glans) is just a small part of it. The clitoris is a largely internal organ, with sets of arms (crus) that extend outwards, and larger bulbs of the vestibule which wrap around the vagina. See the diagram below – the clitoris is shown in yellow.
There are also glands which wrap around the urethra, and as interconnected organs these all act together during sexual stimulation. The area commonly called the g-spot is on the front wall of the vagina, about a finger length in, just past the pubic bone in the spongy flesh. That’s where it is for me, with the women I have had sex with, and is consistent with what I have read about it. This is where the glands around the urethra are, which are though to be responsible for female ejaculation for those people who can do that. The anatomy is different from person to person though, and not everyone with a vulva and vagina has those glands. So the idea of a g-spot is not universal.
Emma
I like the iceberg metaphor. But I also recall a spongy area of nerves that is analogous to a prostate up in there.