The 'Story of the Image of Edessa,’ as recounted in the tenth century, tells of the moment in which Christ's likeness becomes imprinted upon a towel, which he had used to wash and dry his face. This miraculous image became known as the Mandylion (which translates in Byzantine Greek as 'small cloth' or 'towel') and was the most famous image of Christ, 'not made by human hands' from the sixth to the early thirteenth century.
To learn more about the development and history of this ancient Icon, click here.