Eurydice and the Snake. To find out more about Eurydice, the wife of Orpheus, see this Wikipedia article: link; for information about the image: image source.
The image shows the tragic event that takes place on Eurydice's wedding day: she steps on a snake and dies from the bite. That is why her loving husband Orpheus had to make his own journey to the underworld in an attempt to rescue her from the land of the dead, a quest in which he failed.
You can also find more myths and legends for the week of March 4-10 here. For more information and links to the actual javascript code, see the Myths & Legends Widget Reference Page.