The Hoggar (aka Ahaggar) Mountains are in the centre of the Algerian Sahara and are accessible from Tamanrasset by 4x4 along very rocky roads. Dan and I decided to visit them along with some other British travellers. We could have cycled there but it would have been murderously hard work and we would not have been able to carry enough water. 

Nevertheless, it's a great experience when you arrive at the collection of flat-roofed houses which make up the 'visitor centre'. We dropped our kit in our room and went to climb up the hill behind the houses to sit on the crest to watch the sunset, which was spectacular. 

But, it wasn't a patch on the sunrise the next morning. We got up very early in the cold morning and climbed up again to watch the sun come up. It was a moving experience. 

It's unfortunate that many people won't get to see the Hoggar Mountains because of the political problems in the country. It is one of most vivid memories of our journey.