Dallol volcano is located in the Danakil Depression in the north part of Afar Triangle. It is an unusual landscape which is full of yellow, black, pink, green salt deposits as well as hot springs and gas geysers.
This area is also considered to be one of the hottest places on earth, the temperature easily reaches 45 C degrees and it rarely rains. If you are travelling here please make sure to bring loads of water to keep yourself hydrated.
What causes these unusual colours?
It is a natural phenomenon caused by seawater reaction with the volcanic minerals in the magma creating this fascinating sight. The sulphur and salt reaction creates bright yellow acidic colour, whereas in colder water copper salts create a bright blue colour.
How acidic are the waters in Danakil Depression?
This is actually quite interesting average pH levels would be 0.2 which is considered "Ultra" acidic, it is almost the same as the acid within a battery. Which means definitely no swimming in the water! Also ask your tour operator if they can provide a gas mask since you don't want to be always inhaling those poisonous fumes. Just for comparison the acidity of a lemon is 2.0.
Is it safe to travel to Danakil, Ethiopia?
There were a few incidents when tourists were killed or kidnapped. In 2012 5 tourists were killed during their tour and in 2017 one German tourist got shot dead. Hence tour operators must provide you with armed escort. The UK government website continuously updates travel information to Ethiopia.
Here is a great blog post written by BoB if you decide to go Danakil.
In summary, this landscape will definitely make you question if you are still on Earth. Surreal landscapes make it look like Fallout, a post-apocalyptic game.