The Siloli Desert is the world’s highest desert, resting at an altitude of 4550 metres above sea level. It is located close to Bolivia’s border with Chile and considered to be an extension of the neighbouring Atacama Desert. Visitors to this remote part of the world can look forward to dramatic views of geometrically cracked salt pans and rust-coloured hills. The desert’s most iconic feature is the Árbol de Piedra, a seven-metre high sandstone formation that resembles a gnarled tree and was shaped by the region’s harsh winds over thousands of years. The tiny settlement of Ojo de Perdiz has a spattering of guesthouses and a fascinating community, while the nearby Pastos Grandes Lagoon is a shallow salt lake set below a volcanic mountain where you can see flocks of flamingos and revel in the breathtaking scenery.