This is a short chapter but it will explain what Princess Celestia knows.

Everypony in the room including myself looked at Celestia with both startled and confused looked on their faces.

"Princess… what are you talking about? The Seventh Element of Harmony? There are only six, so what are you talking about?" Twilight said.

Luna turned to Celestia and said, "Sister I think it's time to let them know the truth about the Elements of Harmony."

Celestia nodded and turned to the ponies with a look that showed both authority and regret and said, "Please follow me and try not to ask too many questions." Her horn glowed, soon after a small crack appeared in the floor in front of hers and her sisters thrones. The crack started to get wider and wider till a hidden stair case was reviled. She motioned for everyone to follow her. Everyone started walking down the dark passageway. We saw the glow of Celestia's horn once again as torches lit up along both sides of the passage way. Revealing a room filled with books, maps, charts, pictures, artifacts, and along the back wall was a stone monument with 20 spaces for something on it. Everyone except the Princesses were shocked to find out there was a hidden room below the throne room.

Twilight was the first to one to speak, "Princess what is this room? I have read every book there is about the castle but none of them ever mention a room ever being built below the throne room."

The princess sighed and responded with, "That's because this room was here before the castle was even built." All the ponies were shocked to learn this except for the princesses.

"So if this was here already… Then what use to be here?" Twilight asked

"What my sister and I have learned is that this is a special alter that when all the spaces are filled something should appear in the hollow circle on top." Celestia said motioning to the hallow circle in the middle of the monument.

"Ok so that answers that, but what are supposed to go in the spaces princess?" Twilight asked.

The princess sighed even louder than before and said, "What is supposed to go in the open spaces on this monument are the 20 Elements of Harmony." All the faces on the ponies became shocked and amazed.

"Wow, ya'll would never thought that d'er were 20 Elements of Harmony." Applejack said

OK that was interesting am I wrong. Who would have thought that there were 20 Elements of Harmony. Wait for the conclusion of this chapter sometime this week. See ya then.