At the center of the Jaz Murian depression sits what geographers call a hamun -- a seasonal lake that fills and empties with the rhythm of wet and dry years. In good years, water collects from the surrounding mountains and the basin holds a shallow lake. In dry years, the lakebed lies exposed to the sun, a cracked expanse of salt and sediment. The basin is endorheic, meaning no water flows out; everything that enters either evaporates or seeps into the ground. Jaz Murian stretches in an oblong shape from east to west, ringed by mountains on all sides. The lowest elevations lie in the extreme west, toward the towns of Kahnuj and Minab. From above, the basin appears as a pale depression in an otherwise crumpled landscape of brown ridges -- a geographic bowl at the southern edge of the Dasht-e-Lut, one of the hottest deserts on Earth.

Two principal rivers feed the Jaz Murian basin. From the west comes the Halil Rud. From the east flows the Bampur River. In theory, these two watercourses should sustain the seasonal lake at the basin's center. In practice, neither delivers much water anymore. Agriculture along both rivers diverts their flow long before it reaches the central basin. The construction of the Jiroft Dam on the Halil Rud in 1992 was a turning point. Before the dam, the Halil Rud flowed year-round -- a perennial river in a land where perennial rivers are precious. After the dam began operating, the downstream flow dropped to nothing in many seasons. The river that once sustained the Jaz Murian wetland became ephemeral, appearing only during heavy rains. The wetland responded by drying out, and with it went the ecosystem that depended on seasonal flooding.

The Zoroastrian scriptures that name this basin as holy reflect a much older understanding of the landscape -- one in which water, even seasonal water, was sacred precisely because it was scarce. An Armenian Indologist named Seth once proposed that the Jaz Murian basin was repaired or even constructed by Chandragupta Maurya, the founder of India's Maurya Empire, based on a linguistic resemblance between Jaz Murian and the Pali word Moriya. Seth pointed to the discovery of a large Buddhist sanctuary at Koh-i-Khwaja in the nearby Sistan region as supporting evidence. Later historians have not accepted this theory, but it speaks to the basin's deep entanglement with the cultural history of Central and South Asia -- a place where Persian, Indian, and Central Asian civilizations met and left traces in both the landscape and the language.

The drying of Jaz Murian is part of a larger crisis unfolding across southeastern Iran. High evaporation rates, falling water tables from decades of pumping, dam-impounded rivers, and a changing climate have conspired to transform what was once a dynamic wetland into a dusty plain for much of the year. The consequences ripple outward: dust storms sweep across the dried lakebed, vegetation dies back, and the communities that depended on seasonal water adjust or leave. The basin's fate mirrors that of other endorheic lakes across the Middle East and Central Asia -- the Aral Sea, Lake Urmia, Hamun-e Helmand -- places where human water management has outpaced the hydrological systems that sustained life for millennia. From altitude, the Jaz Murian basin tells its story in shades of white and brown: salt deposits where water once stood, dust where wetland grasses once grew.