Flamingos in Laguna Hedionda (4368 m) in the southwest of the altiplano of Bolivia.

Laguna Hedionda shimmers in stripes of pale blue and white and smells faintly of sulphur. There was no human settlement nearby, but the human impact could really be seen here. It's a regular stopping point for all the companies on Day Two, and as the Day Two menus are the same across all the agencies - tuna and rice - there were masses of empty tuna cans old and new strewn about. And wads of toilet paper and cigarrette butts and feminine products. The local foxes gathered round waiting for our scraps, close but not too close. It's a worry when animals have come to depend on people's scraps.

After driving 55km through the Desert of Siloli, which contained the odd big rocks with viscachas living in them (look like rabbits but with long tails), we came to the Arbol de Piedra (stone tree), a rock worn away by the winds over 1000's of years and now looks like a tree.

The Sol de Manana Geysers is the highest geyser field in the world at almost 5000m. There are no rails so safety is up to the visitor. The geysers shoot out steam and there are bubbling, pitting pools of sulphur - impressive but smelly and its very cold.