National Geographic has obtained exclusive photos from the U.S. Coast Guard of the Deepwater Horizon explosion which occurred on April 20, 2010 and eventually led to the leak of thousands of barrels of oil into the ocean. The leak has yet to be plugged over a month later and the environmental effects are extreme. [via]

The photos are incredibly sad as you basically get to witness the fall and sinkage of an entire oil rig.

Here’s a segment from National Geographic Channel’s documentary about the disaster.