This is the longest continuously active volcano in the world, after Stromboli in Italy and Mauna Kea in Hawaii. It is located in the hottest place on earth measured by average temperature. The mountain rises from below sea level in the Danakil Depression to 613m above sea level. Staring into the abyss conjures up images of Mount Doom from The Lord of the Rings. (Just be careful not to throw any rings into the lava, unless they have dangerous magical powers.)
One of the highlights of any trip to the Danakil is camping under the stars. For greater trekking range, it is possible to have camels carry tents and other supplies. This can add to the uniqueness of a trek in the Danakil, as well.
Government requirements for visiting the Danakil are always changing, so it is important to check or go with a tour company that is on the up and up. Sometimes, up to seven civil servants are required by the Afar government. These include guides, armed scouts, and others, and it is no wonder: a handful of Europeans died at the hands of Afar bandits in 2012.