Black is my favourite color. As you probably know, Iceland is a volcanic island, though black is not very difficult to find (this is actually the case for every other color!). But if you are looking for a truly black landscape, so black that you feel like you don't perceive color anymore, you have to visit Skeiðarársandur. This colossal amount black sand is the result of the melting giant : Vatnajökull. It is a no man's land that millions liters of water cross everyday to reach the ocean and by consequence it is a great place to slowly suffocate in quicksands (did I already say I was afraid of quicksands? ^^).
Ho and by the way, I wish you a great day full of joy and colors! ;)
For more pictures of a driving to hell, do not hesitate to visit http://www.julienfumard.com/iceland-diary-gateways-to-hell/