Oman
The largest continuous sand desert on Earth begins where Dhofar's gravel plains give out.
North of Salalah, gravel plains yield to the first high ridges of the Rub al Khali. At sunset, the sand shifts from gold to rust while the vehicle remains the essential thread back to the road.
North of Salalah the gravel plains give out into the Rub al Khali, the Empty Quarter: some 650,000 square kilometres of sand, the largest continuous sand desert on Earth, with dunes standing up to 250 metres. Wilfred Thesiger crossed it twice in the 1940s with Bedouin companions and made it legend. Licensed expeditions out of Salalah run from seven-hour days to overnight camps with dinner cooked at the dunes, and the driving belongs to them: this is not self-drive country. At sunset the sand goes from gold to rust, ridge after ridge to the horizon.
Solo
One seat on a licensed expedition buys the largest sand desert on Earth without owning a single piece of recovery gear.
Couple
The overnight camp is the format: sunset on a ridge, dinner at the dunes, and the desert's silence doing the rest.
Friends
A private 4WD divides neatly across a small group, and the dune driving entertains most when it is the guide's problem.
Camp dinners cooked at the dunes on the overnight expeditions, with dates and cardamom coffee first.
Dates eaten on a dune crest at sunset, grit and all.

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Carretera Austral
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Ferries and gravel carry Route 7 through more than 1,200 kilometres of green Patagonia.

Knoydart Peninsula
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No road reaches this peninsula — you arrive by boat or not at all.

Lençóis Maranhenses
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Thousands of rain-filled lagoons between white dunes stretching to the horizon like another planet.

Musandam Peninsula
Oman
Bare limestone drops into drowned valleys where dolphins ride the dhow's bow wave.

Masirah Island
Oman
Loggerhead turtles come ashore here in one of the largest nesting populations on Earth.

Wadi Shab
Oman
A chain of cool pools ends at a waterfall hidden inside a keyhole chamber.

Jebel Shams
Oman
The rim path hangs above a thousand metres of air, Egyptian vultures working the thermals below.