Ponytale: The Reboot Strikes Back

Long ago, three races ruled over the Earth: Humans, Monsters and Equestrians. One day, a war broke out between the three races and after a long series of battles, the humans were victorious over the Equestrians and Monsters. The greatest of their magicians sealed the defeated in the Underground with a magic barrier. However, this barrier is not perfect.
Many years after the war - over a thousand years ago infact - in 201X, a human climbs Mount Horse for their own mysterious reason. It is said that those who climb the mountain never return.

Our story begins with our protagonist, the human. Having come to the mountain for unknowable reasons, they found a hole in the caverns at the top of Mount Horse. When investigating closer, they stumbled due to a vine they failed to notice and fell for what seemed an eternity, passing out in the process.
Before they had woken up, they'd been noticed by a small creature, one that disappeared as they began to stir.

Upon waking up, they were greeted with a view of the hole they fell through, light cast down upon their prone form like a spotlight. Surprisingly, they found that they had sustained no injuries in the fall, despite the odds and how far they had fallen - which presented another problem. No vines were long enough to reach them, not to mention their probable weakness, so climbing out was not an option. They had fallen upon a bed of yellow flowers which grew in a neat pattern, too neat to be wildly growing ones. The surrounding area was barren of anything else however, besides a few supporting pillars. But there was a doorway at the end of a small corridor. One that might lead out of this place. And who knows; maybe the caretaker of the flowers was nearby and could help?