The forgotten

It was a sunny morning in ponyville, and rainbow dash was doing her usual stunts and practicing her usual flying. As she was nearing top speed, a gleam of something caught her eye. " I wonder what that is? " she said to herself. She gently glided to the ground to have a closer look at whatever it was.

When she landed softly on the the green media grass, she saw a small piece of metal sticking out from under a patch of nettles. As she tried  pulling it with her hoof, rd found out it was connected to something under the nettle. A handle!  Rainbow cleared the nettles away with her hooves. A door! After looking aruond to check no one was watching. This was HER secret, but maybe she would tell fluttershy. After carefully picking the lock with a twig, she pulled the door. It was old and rusted, so it gave way easily.

As she descended the narro steps, rainbow thought she heard a faint moan, but passed it off as her imagination. She felt for a light switch and clicked it....