"Beneath the oil slick" (graphic)

(Click on the image to enlarge)
Times-Picayune(LA):

Even as experts scramble to come up with a way of keeping the oil from the Deepwater Horizon well from continuing to flow freely into the Gulf of Mexico,

BP concedes that a relief well will eventually have to be drilled in order to successfully shut down the existing leaking well. The graphic (above) explains what's happening on the ocean floor, and how the relief well will work.