Twilight and the other Elements of Harmony have saved the land of Equestria from Nightmare Moon, Discord, and the Changeling army, but now they face perhaps their biggest challenge yet. A challenge that lurks behind smiling faces and friendly eyes. A challenge that threatens to overtake the entirety of Equestria and enslave its inhabitants. But the ponies won’t face this threat alone. Help comes in the form of the most unlikely of companions: four teenagers, a hawk, and a blue centaur.

Daring Do cannot believe her luck when she is asked to help explore the most ancient tomb known to ponykind. But terrible danger awaits her, for beneath the earth rests something beyond equine understanding.

Warning: comments contain ending spoilers.

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Alternate ending by Duplex Fields.
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What would you do if you've gone where no mare has gone before, and have no idea how to get back?

Rainbow Dash found herself alone in a strange, magicless world governed by entirely different natural laws than Equestria, ruled by a race who thought themselves the only sentient species in the universe...

Twilight does some research into her tried and true teleportation spell.

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