Qualla: 743 Caspian Gates Earthquake

743 Caspian Gates Earthquake: Introduction

Sat, 28 Feb 2026 00:00:00 GMT

In the year 6235 by the Byzantine calendar -- 743 or 744 AD by modern reckoning -- the earth tore open at the Caspian Gates. A sign appeared in the northern sky. Dust fell on distant cities. The chronicler Theophanes the Confessor recorded these details in Constantinople, more than a thousand miles from the epicenter, and the fact that tremors this far away rated mention in the imperial chronicle tells us one thing with certainty: this was enormous.

743 Caspian Gates Earthquake: The Chronicles Speak

Sat, 28 Feb 2026 00:00:00 GMT

Theophanes dated the earthquake to the third regnal year of Emperor Constantine V, who ruled from 741 to 775. His account is spare but vivid: a sign in the north, dust descending on various places, and destruction at the Caspian Gates. The 11th-century chronicler George Kedrenos ...

743 Caspian Gates Earthquake: Where Were the Caspian Gates?

Sat, 28 Feb 2026 00:00:00 GMT

The name is the puzzle. "Caspian Gates" was a geographic term ancient and medieval writers applied to several different mountain passes across the Caucasus -- the narrow corridors linking the Mediterranean world to the Iranian plateau and Central Asia. By the Byzantine era, the t...

743 Caspian Gates Earthquake: The Debate Continues

Sat, 28 Feb 2026 00:00:00 GMT

In the 19th century, the German geographer Karl Ernst Adolf von Hoff and the Irish engineer Robert Mallet proposed yet another location: the pass of Dariel, a gorge through the central Caucasus on the Georgia-Russia border. The proliferation of candidates reflects the ambiguity b...

743 Caspian Gates Earthquake: Dust and Memory

Sat, 28 Feb 2026 00:00:00 GMT

What survives is an echo: a few lines in a Byzantine chronicle, a mention of dust in the sky, and a geographic name that points in several directions at once. The earthquake itself has been absorbed into the ground, its rupture healed by thirteen centuries of tectonic motion. But...