Via an article by G.W. Bowersock in the New York Review of Books I was reminded that I haven't been to the Met lately.
Image courtesy MetMuseum, click here or on image to enlarge
Here is more directly from the Met, including a video about the discovery of the mosaic and a link to this page.
For those living in the area, how about a field trip before April 3? Contact me at irenesbooks at optonline.net.