Catalan scientist says pyramids may predate ancient Egypt

A Catalan researcher in Spain has sparked fresh controversy after claiming the Pyramids of Giza could be up to 12,000 years old, potentially predating ancient Egypt itself. The study, published online but not peer-reviewed, suggests the iconic structures may not have been built by Egyptians.

What the Catalan study claims about the pyramids

The research, titled The Pyramids of Giza: Legacy of an Unknown Civilization, was published on Academia.edu by a Catalan author.

At its core, the argument is simple – and controversial: the pyramids may have existed long before ancient Egyptian civilisation

According to the study, instead of building the pyramids from scratch, the Egyptians may have inherited older structures and later attempted to replicate them.

If true, this would push the timeline back to around 12,000 years ago, thousands of years earlier than the widely accepted date of roughly 2600–2500 BC.

That’s not a small adjustment – it’s a complete rewrite of history.

Why this theory keeps coming back

This isn’t the first time such claims have surfaced.

For years, alternative researchers like Graham Hancock, Robert Bauval and Robert Schoch have suggested that traces of an older civilisation might exist beneath or behind ancient Egypt.

These ideas often resurface in waves – especially when new studies or online publications appear.

And in Spain, where interest in history, archaeology and alternative theories is strong, stories like this tend to gain traction quickly.

The arguments used to support the 12,000-year timeline

The Catalan study pulls together several familiar points that have been debated for decades.

One of the most talked-about is the absence of confirmed royal mummies inside the pyramids of Giza. While they’re commonly described as tombs, no clearly identified pharaoh has ever been found inside them.

Another argument focuses on the precision of the stonework, particularly in the King’s Chamber. Some researchers claim the cuts are difficult to explain using the copper tools available at the time.

Then there’s the Sphinx erosion theory, which suggests that weathering patterns may have been caused by heavy rainfall – something that would point to a much earlier climate than the dry conditions associated with ancient Egypt.

Finally, the study highlights the astronomical alignment of the pyramids, arguing that their layout reflects advanced knowledge of the stars.

Individually, these points raise questions. Together, supporters say they suggest something more.

What mainstream experts say – and why they disagree

Despite the attention this study is getting in Spain and online, most archaeologists remain unconvinced.

The traditional explanation is supported by a large body of evidence, including:

• Archaeological findings linking the pyramids to known Egyptian rulers
• Historical records from ancient Egypt
• Evidence of workforce organisation and building techniques

Experts also stress a crucial point: the study has not been peer-reviewed, meaning it hasn’t undergone formal scientific validation

In practical terms, that puts it in the category of interesting but unproven.

Why stories like this go viral – especially in Spain

There’s a reason these theories keep capturing attention.

The pyramids are one of the few ancient structures that still feel almost impossible to fully explain at first glance. Their size, precision and alignment naturally invite speculation.

In Spain, where international news often mixes with viral online content, stories like this tend to spread fast – especially when they involve a local angle like a Catalan researcher.

For  readers scrolling through headlines, it can sometimes be difficult to separate:

• solid archaeological consensus
• from eye-catching alternative theories

So, what should you take from this?

Right now, there is no scientific consensus supporting the idea that the pyramids are 12,000 years old or built by an unknown civilisation.

That doesn’t mean the discussion is useless – far from it. Questioning and re-examining history is part of how knowledge evolves.

But for now, the established view remains firmly in place: the pyramids were built by ancient Egyptians around 4,500 years ago

The bottom line

The Catalan study hasn’t rewritten history – but it has done something just as powerful: it’s reignited curiosity.

And maybe that’s why these stories never really disappear.

Because whether you’re reading this in Spain, the UK, or anywhere else, the pyramids still have that effect – they make people stop, question, and wonder if there’s more to the story.

For now, though, the mystery remains exactly that:  a mystery – not a proven fact.