The Old Testament described Edom as a neighbouring enemy state of Judea, located southeast of the Dead Sea where explorers would now find parts of Jordan and Israel.

It was spoken of extremely harshly, with some biblical texts indicating that it was complicit in the destruction of Judea and the holy city of Jerusalem.

Edom has been described as a place “where kings reigned before any Israelite king reigned”, but is later said to have been defeated and plundered by King David of Israel.

Such tales have been scoffed at by plenty of historians down the years, but discoveries by a team of scientists and archaeologists in the area where it would have stood have raised new questions about its possible existence.

Researchers from the University of California and Tel Aviv University have been working at the supposed site in what is now known as the Arabah Valley.

There they excavated a copper production site dubbed Slaves’ Hill, dating back more than 6,000 years, which yielded layers of smelting waste that have helped reconstruct a time when the region enjoyed a “technological leap”.

Using a process called radiocarbon dating, which helps determine how old an organic object is, the researchers were able to put a date on the smelting waste – better known as slag.

Analysis of the minerals and metals within the slag was then used to work out how smelting techniques changed over the centuries, with lower concentrations of copper indicating that more had been extracted.

Efficiency improved dramatically in the second half of the 10th century BC and the techniques also became common across various sites in the region – indicating that other workers were picking them up.

Detailing the findings in the journal PLOS ONE, team leader Erez Ben-Yosef said the technological leap played a key role in the move from the Bronze Age to the Iron Age.

“Our study sheds new light on the emergence of the archaeologically elusive biblical kingdom of Edom, indicating that the process started much earlier than previously thought,” he said.

“That said, the study’s contribution goes beyond the Edomite case, as it provides significant insights on ancient technological evolution and the intricate interconnections between technology and society.

“The results demonstrate that the punctuated equilibrium evolutionary model is applicable to ancient technological developments, and that in turn, these developments are proxies for social processes.”

“Genesis 36:31-39 lists the eight Edomite kings up to that time, delineating a long line of political leaders during the years in which Israel lived in slavery in Egypt.”