Principles of Time Travel

This book is written in an ancient language you cannot understand. In the margins, however, someone has scribbled notes in the common tongue detailing how the time crystals can be used to travel back to ancient days:
"The Creators built this complex over a time sink, and constructed several sundials that tap into the heart of the temporal instability. Using a time crystal on one of these sundials activates the time sink, drawing the person back into the ancient past. Using the crystal on the sundial in the past will return the person to the future.
"In my explorations of the ancient past, I have discovered several interesting anomalies associated with time travel. First, it is not possible to travel beyond the range of the time sink's influence. For this reason I have only been able to explore the complex itself, despite my desire to see the world as it was before the changing climate covered the land in ice and snow.
Also, I have discovered that it is not possible to bring certain items back from the past into the present. This is likely an inherent aspect of temporal displacement that minimizes paradoxes and disruptions of the time stream. This is fortunate, for I shudder to think of the consequences if the Creators had ever discovered a way to travel from the past into our own time.
"Had another run-in with the Creator Race during my last visit to the past. Those walking lizards surprised me in a dead-end hall. It was all I could do to escape with my life. I am beginning to wonder if further exploration of these ruins is truly worth the risk."
Category:Neverwinter Nights
Category:Books