Cold War Spy Satellites Uncovered a 2,700-Year-Old Armenian Water System

Beneath the dry farmland of Armenia’s Ararat Plain lies the outline of a canal network, a water system, built more than 2,700 years ago. It was not mapped in full until researchers combined modern satellite images with declassified Cold War spy photographs.

The network served Argishtikhinili, an administrative city built by King Argishti I of Urartu, an Iron Age kingdom centered on Lake Van in what is now eastern Turkey. Argishti ruled from 786 to 764 BCE. He had already founded the fortress of Erebuni, now Yerevan, in 782 BCE; a few years later he established Argishtikhinili on the middle course of the Aras River to administer the plain his armies had just conquered.

Researchers used Cold War spy photos to map a hidden canal network

A team from the University of Warsaw and the National Academy of Sciences of the Republic of Armenia mapped the site using Landsat and Sentinel-1 satellite imagery, digital elevation models, and declassified American CORONA and GAMBIT reconnaissance photographs from the Cold War. They published the results in the journal Antiquity. The combined imagery identified more than 600 miles of water-management features across the plain: about 429 kilometers of channels still carrying water today, roughly 420 kilometers of former mountain streams and old branches of the Aras River repurposed for irrigation, 36 kilometers of deeply cut paleochannels, and about 135 kilometers of probable ancient canals awaiting confirmation.

Stelae inscribed for Argishti I record that he found the plain empty of people and unfit for farming, then ordered canals dug to irrigate new vineyards and orchards. Later inscriptions describe five main canals feeding the city and the farmland around it. The system ran on gravity alone: engineers read the slope of the land precisely enough to move water for miles without a single pump.

The city stored grain on an industrial scale, then fell to invaders

Argishtikhinili sat on flat, exposed ground, a poor defensive position compared with the mountaintop fortresses Urartu typically favored. Excavated granaries, wine cellars, storerooms and barracks show what kept the city running: a bureaucracy that managed the region’s harvest and stored it for the state. Chinese-language accounts of the excavation put grain storage at roughly 5,000 tons and wine storage at 160,000 liters, figures that could not be confirmed against the paywalled Antiquity paper.

Urartu’s long war with the Assyrian Empire wore the kingdom down. King Rusa I lost Urartu’s chief temple to the army of the Assyrian king Sargon II, and later monarchs rebuilt granaries and temples at Argishtikhinili without restoring the kingdom’s power. Archaeologists have found burn layers, weapons, and human remains dating to around 600 BCE, when the city was destroyed, likely by Scythian or Median raiders. Argishtikhinili had stood for less than two centuries.

Researchers say many of the modern irrigation channels crossing the Ararat Plain today follow the same routes first cut under Argishti I and his successors, still carrying water more than 2,700 years later.

By Wen Shan, Vision Times