What Is This ?

Any ideas? What does it look like to you?

As usually, the answer is inside the post.

This is one hundred million pennies field. These photos were taken at the Penny Harvest at Rockefeller Center that is sponsored by a non-profit organization called Common Cents. It is an amazing sight with millions and millions of pennies in a pool. Although the spectators tossed in other coins, the field mostly contains pennies.