What is the Planet of the Crossing? Is there a Nibiru?

Sumerian Planet X

The Ancient Berlin Seal –  What were they trying to tell us?

It is said the the ancient Sumerians knew of another planet located in our Solar System.  Have you ever heard of the Planet of the Crossing?  Is there really a planet orbiting in our solar system on an abnormal elliptical?  It is said that when the planet (also known as Nibiru, Planet X, and solar Winged Disk) passes, catastrophes will occur on the planet Earth that will be unbearable to anyone who will be around to witness.  Is this true?  Many believe that this information is being hidden by a select group to avoid worldwide panic?  Thoughts.