The Trade Route Where Salt Was Worth Its Weight in Gold

Across the Sahara Desert, camel caravans carried on a trade so valuable it built some of history's richest empires.

Picture a desert crossing so long and harsh that only a specially adapted animal could survive it, carrying cargo so valuable that entire empires rose and fell around controlling it. That's the story of the trans-Saharan trade, one of history's great trading networks — and one that doesn't get told nearly often enough.

Salt worth its weight in gold

For centuries, camel caravans crossed the vast Sahara Desert, connecting North Africa to the kingdoms of West Africa. Heading south, caravans carried huge slabs of salt, mined from desert deposits — genuinely precious in West Africa, where it was scarce but essential for preserving food and staying healthy in a hot climate. Heading north, caravans carried gold, mined from rich deposits in West Africa, along with ivory and other goods. At some points in history, salt and gold were traded at close to equal value, pound for pound — which is exactly how this trade earned its nickname.

The empires that grew rich

Controlling this trade route made some West African kingdoms extraordinarily wealthy and powerful, including the Ghana Empire and later the Mali Empire. The Mali Empire's ruler Mansa Musa, who reigned in the early 1300s, became legendary for his wealth — historians still debate exactly how rich he was, but accounts from his famous pilgrimage across North Africa and the Middle East describe him giving away so much gold along the way that it reportedly affected local gold prices for years afterward.

Camels: the trucks of the desert

None of this trade would have been possible without the camel. Camels can travel for over a week without drinking water, carry heavy loads, and tolerate extreme desert heat far better than horses or donkeys. Caravans sometimes included over a thousand camels, guided by experienced desert traders who knew the location of scattered oases the way a sailor knows the stars.

Why it eventually declined

Starting in the 1400s, European sailors began establishing sea routes directly along Africa's coast, making it possible to trade for West African gold without crossing the desert at all. Over time, this slowly pulled trade away from the old overland caravan routes — a shift similar to what happened to the Silk Road in Asia around the same era.

A question to think about

Salt seems like an ordinary thing today, but it was once worth as much as gold. Can you think of something ordinary today that might have been considered incredibly precious in a different time or place?