Thanks for your reply Chris and am just making my way around the forum.
I have uploaded a couple pics of my trip to Mauritania, it has been the most 'interesting' journey I have made by train so far and I am toying with the idea of building a small model railway of it complete with a replica of Ben Amera (the Ayers Rock of Africa) .... need to buy a bigger flat first
Will dig out a few more pics of other journey and upload them.