Ustyurt Plateau

The Ustyurt Plateau is a vast elevated plain between the Caspian and Aral Seas, covering roughly 200,000 square kilometres across Kazakhstan and Uzbekistan. From the air it appears featureless — a flat, pale immensity interrupted by nothing. On the ground, the plateau's most dramatic feature reveals itself at its edges: the chinks, escarpments where the plateau's surface breaks off in sheer white chalk cliffs that drop thirty to 150 metres to the desert below. The largest of these formations, near Boszhira in the Mangystau Region, produce a landscape that looks less like Earth than like a photograph from a probe mission.

The plateau was the floor of the Tethys Ocean for tens of millions of years. The white chalk that forms its surface and its cliffs is compressed marine sediment, rich with fossils of creatures that lived in that ancient sea and were buried in its floor. Wind and the absence of vegetation have worked that material into forms — pillars, arches, ridges, isolated white towers — that stand against the open sky with a geometry the eye initially refuses to credit as natural.

Summer temperatures on the plateau exceed 40 degrees Celsius and winter drops to minus 30. The spring window, from April through early June, gives manageable temperatures and the brief wildflower bloom that appears across the steppe before the heat arrives. Autumn provides the second window: lower temperatures, better photography light, and the particular stillness of the plateau after the hot season ends.

This is of the most remote and least visited landscapes in Kazakhstan, and that remoteness is part of what makes it remarkable.

The Boszhira formation is the plateau's centrepiece. A pair of white chalk peaks rising from a bowl in the escarpment, surrounded by eroded towers and ridges that stretch toward the Caspian horizon, Boszhira produces the kind of view that takes several minutes to fully read because there are too many elements of it to process simultaneously. Approaching the rim at dawn, with the valley still in shadow below and the peaks catching the first light, is the image most photographers who visit come back specifically to attempt a second time.

The salt flat at Tuzbair, accessible from the escarpment, is a different kind of landscape: flat, white, absolutely still, and on a clear night reflective enough to double the sky. Astrophotography on the Ustyurt plateau is exceptional by any global standard — the plateau sits far from any major settlement, the altitude reduces atmospheric interference, and the sky reaches a quality of darkness that most of the world's population has never experienced. The Milky Way on a moonless night at Boszhira is the kind of thing people reference years later in conversations about what they have seen.

The chinks, the escarpment faces, are rich with Tethys Ocean fossils. Ammonites, shark teeth, and marine bivalves appear in the chalk walls along any significant face. Examining them in situ — running a hand across the wall and feeling the spiral of an ammonite embedded in the rock — is a physical encounter with deep time that collecting the fossil cannot replicate.

The Beket-Ata underground mosque, two hours' drive across the plateau, combines with a Boszhira visit into a multi-day route.

The Ustyurt Plateau sits on the compressed sediment of two ancient seas. The Tethys Ocean covered this region during the Cretaceous and Paleogene periods, depositing the chalk and limestone that now forms the plateau's surface. When the Tethys retreated and the land rose, the Paratethys — a successor inland sea that connected what is now the Caspian to the Black Sea — covered much of the same territory again before it too diminished and separated into the remnant water bodies that include today's Caspian and Aral Seas.

The Aral Sea's eastern shore touched the plateau's northern edge. Soviet-era irrigation projects diverted the rivers feeding the Aral from the 1960s, and by the early 2000s the sea had shrunk to a fraction of its former area, leaving behind salt flats and rusted boat hulks on what had been the lakebed. The plateau now overlooks this ecological catastrophe to the north — of the largest manmade environmental disasters of the twentieth century, visible in the plateau's changed horizon.

Human passage across the Ustyurt is ancient. The plateau functioned as a difficult but traversable route between the Caspian coast and the steppe lands to the east, used by nomadic groups, Silk Road traders, and military campaigns. The geoglyphs — large geometric forms visible from the air — discovered on the plateau by Soviet aerial surveys in the 1980s suggest organised human activity of uncertain purpose dating to at least several thousand years ago.

The caravanserai ruins that dot the plateau are the material record of the medieval Silk Road traffic that crossed it at considerable cost, moving between the trading centres of the Caspian coast and the Central Asian river civilisations.