In the south of Bolivia, near the border with Chile, is an expanse of terrain known as the Salar de Uyuni. This area used to be an ocean millions of years ago, but all that is left of this is the salt. This may not sound of any interest but try to imagine miles and miles of blank white terrain in all directions, with mountains surrounding the edges, and the mountains perfectly reflected in a couple of inches of water on the surface of the salt. It's amazing: pure beauty.
To get here you must make your way either to Uyuni in the south of Bolivia, or to San Pedro de Atacama in Chile. Many travellers use this four-day trip as their crossing point between the two countries. I took a three-day trip from Uyuni southwards, and crossed into Chile from there (the fourth day of the trip is getting back to Uyuni in the 4WD). The trip cost me $65, but you can pay more. This was fine though, the food was good and our driver was an expert mechanic - just as well, as the jeeps don't last so long what with all the salt.
Along with the salt plains themselves, there are many more attractions on this trip. On the first day we also visited a salt factory, some hotels made purely from salt, and an island in the midst of the salt plains that was covered in huge cactii. It even had its own resident ostrich of all things! The nights were spent in remote guesthouses along the way, which were comfortable but sparse. We were fed in each of the guesthouses too, dinner and breakfast, and our lunch was prepared each day by the driver/guide and his son.
There were also other types of terrain along with the salt plains. We passed through massive wide desert plains surrounded by huge mountains, saw lakes with waters of many different colours, thousands of pink flamingoes, wild foxes and alpaca, huge strange rock formations, bubbling lava springs and hot geysers, natural hot baths - all in all an amazing experience. Some of our group stripped to our shorts to bathe in the hot springs in sub-zero temperatures, it was great fun lying in the warm water watching everyone all wrapped up and trudging about the place! By the time we'd eaten breakfast our shorts and towels had hardened because they were starting to freeze!
This trip was another of the highlights of my time in South America. The scenery is like something from another planet at times. If you are anywhere near this area of the world, you should definitely include it in your itinerary.