During the Great Winter almost all of the Nobles left many Ponies behind, only caring about themselves and not sparing a thought as they left there to the mercy of the cold and frozen wastes. All but one, a young Noble refused to leave the "lesser Ponies" behind, and was abandoned with them.
It was thought for over a thousand years that they had perished from the cold, lost to history never to be found again.
Until other counties, the Griffin Nations in particular, started talking about a small county inhabited by Ponies of not just the original three tribes but many other types of Ponies as well from hybrids to the unlucky ones changed by Chaos magic.
Princess Celestia had heard the stories for years but was never able to look into them herself because of multiple factors, like the return of her sister. Now that Princess Luna has returned and has been freed of Nightmare Celestia finally has the chance to look into these stories but because of her duties she is unable to do it herself so she sends her Student Twilight Sparkle and her friends to search for this "Lost Pony Country" and see if the stories are true.
Either Celestia nor Twilight and her friends where prepared for what they found.
So this little idea sort of started as just a thread post on a group I'm a member of (though the post was removed a few hours after, not that it's a problem. My guess was it was seen as self-promotion which I didn't intend at all.) and the ones who commented said it was a good base for a story and after thinking for a bit I agreed with them, so here it is.
There will be some references to Monster Hunter but not enough to be considered a crossover as none of the creatures or such will appear, just some ideas and concepts at the base level.
I will add a cover art when I can find a good enough picture.