This copy is for your personal, non-commercial use only. Distribution and use of this material are governed by our Subscriber Agreement and by copyright law. For non-personal use or to order multiple copies, please contact The Epoch Times Reprints.
The Sahara Desert is known for its heat and harsh environment, but it is also home to a remarkable geological feature.
At this time of year in Europe, you may have noticed something in the air.
The final resting place of a 50,000-strong Persian army which was swallowed up in a cataclysmic sandstorm in the Sahara Desert around 524 BC is one of the greatest mysteries in ancient history.
