More than two thousand mounds of asphalt harboring a wealth of deep-water creatures have been discovered up to two kilometers deep, off the coast of Angola. Scientists have been examining the images and data captured at the site to build an intriguing picture of the life and geology of this underwater area. The naturally-occurring asphalt mounds are made up of the same substance that covers our roads.

Source: Scientists examine mysterious tar mounds in the West African deep ocean