The Trans-Sahara Highway is one of the most brutal roads in the world. Though about 85% of the road is now paved, there are still several miles of this desert road that are little more than tracks in the sand. Running for a mammoth 4,500km through three countries, it's a test of mettle and guts that attracts the brave, the foolhardy and the crazy. 

Djebel Chélia is a high mountain peak at an elevation of 2.293m (7,522ft) above the sea level, located in Batna Province of Algeria.

Tizi Tirkabine is a high mountain pass at an elevation of 1.362m (4,468ft) above the sea level, located in northern Algeria, in the province of Bouïra.

Tikjda Pass is a mountain pass at an elevation of 1.462m (4,796ft) above the sea level, located in the province of Bouïra, in Algeria.

Assekrem is a high mountain plateau at an elevation of 2.708m (8,884ft) above the sea level, located in the Tamanrasset Province of southern Algeria.

Azrou n'Thor is a high mountain peak at an elevation of 1.800m (5,905ft) above the sea level, located in Tizi Ouzou Province in northern Algeria.

Col de Tirourda is a high mountain pass at an elevation of 1.737m (5,698ft) above the sea level, located on the boundary of Bouïra and Tizi Ouzou provinces in northern Algeria.

Tizi-n-Kouilal is a high mountain pass at an elevation of 1.565m (5,134ft) above the sea level, located in the Djurdjura Mountains in northern Algeria, in the province of Bouïra.

Azrou Ou Gougane is a high mountain pass at an elevation of 1.867m (6,125ft) above the sea level, located in Tizi Ouzou Province in northern Algeria.

Col-Ain-Tinne (Teniet Bou Irhyal) is a high mountain pass at an elevation of 1.686m (5,531ft) above the sea level, located in Batna province, in the Aures region of north-eastern Algeria.