The same monuments, two very different calendars. Green events carry the weight of consensus science; terracotta events are the dates proposed by alternative researchers; blue-grey events are the geological backdrop both sides build their stories on. Where the two chronologies claim the same monument — Giza, the Sphinx, Tiwanaku — you'll find it twice, thousands of years apart.
Humans leave footprints beside Ice Age lake margins in New Mexico around 23,000–21,000 years ago — dated by seeds, pollen and quartz grains across 2021–2025 studies — placing people in the Americas during the Last Glacial Maximum, far earlier than long accepted.
Ice Age hunter-gatherers in France create the great painted caves of Lascaux, evidence of sophisticated symbolic culture within the accepted Palaeolithic world.
Foragers camp beside a creek in southern Chile around 14,500 years ago, leaving hearths, wooden structures and even seaweed — the site whose 20-year fight for acceptance broke the Clovis-first model of the peopling of the Americas.
Pre-Pottery Neolithic hunter-gatherers in southeastern Turkey raise monumental rings of carved T-shaped pillars — the oldest known megalithic architecture, securely dated by radiocarbon.
After more than a millennium of use, the enclosures are progressively infilled and abandoned — a deliberate or gradual burial that preserved the site until its excavation from 1995.
One of the world's largest Neolithic settlements is established in Anatolia, housing thousands in densely packed mudbrick houses rich in art and ritual for over a thousand years.
The Varna necropolis on the Bulgarian Black Sea coast holds the oldest known worked gold, buried with a few high-status individuals around 4600–4200 BC. It is cited as some of the earliest clear evidence of social hierarchy and metalworking wealth in prehistoric Europe.
Narmer unites Upper and Lower Egypt, founding the First Dynasty; hieroglyphic writing and the pharaonic state emerge from centuries of documented predynastic development.
Imhotep builds Egypt's first monumental stone pyramid at Saqqara, beginning the rapid, traceable evolution of pyramid engineering over the following century.
Khufu's pyramid at Giza is finished around 2560 BC, dated by radiocarbon, quarry marks, workers' settlements and the Wadi al-Jarf papyri of the official Merer, which log limestone deliveries to the site.
In the consensus view the Sphinx is carved from the Giza bedrock during the reign of Khafre, alongside his pyramid and valley temple complex.
The bronze-and-gold Nebra Sky Disk, showing the sun or moon, a crescent and a cluster read as the Pleiades, is made in Bronze Age central Germany and dated to around 1800–1600 BC. It is widely regarded as the oldest concrete depiction of astronomical phenomena, a centrepiece of archaeoastronomy.
Around 1177 BC a wave of destruction ends or weakens the Hittite, Mycenaean and other eastern Mediterranean powers, with Egyptian records blaming raiding 'Sea Peoples'. Historians debate whether the cause was invasion, drought, earthquake storms, systems collapse or some combination.
The Greek city of Helike sinks in a single night of earthquake and wave on the Gulf of Corinth — a documented drowned city, rediscovered in 2001, that classical writers knew and Plato's contemporaries would have remembered as he wrote of Atlantis a dozen years later.
In the Timaeus and Critias, Plato describes Atlantis and its destruction 9,000 years before Solon — the sole ancient source for the story, read as allegory by scholars and as memory by alternative researchers.
Greek craftsmen build a geared bronze computer that models the sun, moon, eclipses and planets — technology of a complexity not seen again for over a millennium, and the strongest proof that ancient knowledge really could be lost.
Mainstream archaeology dates the monumental core of Tiwanaku, including the Kalasasaya and Gateway of the Sun, to a state that flourished around AD 500–1000 — millennia after Posnansky's proposed date.
Lee Berger's team announces, via preprints and a Netflix documentary, that small-brained Homo naledi deliberately buried its dead and made wall engravings in the Rising Star cave around 250,000 years ago. Many mainstream palaeoanthropologists reject both the evidence and the manner of its release, making it a notable case of intra-scientific dispute.
Animal bones from Bluefish Caves in the Yukon carry marks interpreted as butchery, radiocarbon-dated to roughly 24,000–22,000 years ago. If accepted as human, they place people in eastern Beringia during the Last Glacial Maximum, far earlier than the Clovis model allows; sceptics question whether the marks and their context are genuinely cultural.
Danny Hilman Natawidjaja's team claims the deepest buried layers of Gunung Padang in Java are man-made and up to 25,000 or more years old; the 2023 paper making this case was retracted in 2024.
Arthur Posnansky argued in the early 20th century, from solar alignments of the Kalasasaya, that Tiwanaku in Bolivia was founded around 15,000 BC — a date modern archaeology rejects but alternative writers still cite.
The Meadowcroft Rockshelter in Pennsylvania yields stone tools and hearths that excavator James Adovasio dates to around 14,000 years ago or more, challenging 'Clovis-first'. Critics long argued the deep radiocarbon dates might be contaminated by ancient carbon, though the site remains among the more widely respected pre-Clovis candidates.
Martin Sweatman and colleagues interpret the animal carvings on Göbekli Tepe's Vulture Stone as a date stamp recording a Taurid comet strike around 10,950 BC; the excavation team rejects the reading.
Under the contested Younger Dryas Impact Hypothesis, fragments of a giant comet strike or airburst over North America and beyond, triggering the cooling, wildfires and megafaunal extinctions.
Robert Bauval and Graham Hancock argue the Giza pyramid layout mirrors Orion's Belt as it appeared c. 10,500 BC, when the Sphinx would have gazed at the constellation Leo — the proposed 'ground plan' date for the plateau.
In his revised chronology, geologist Robert Schoch places the original carving of the Great Sphinx at the end of the last Ice Age, around 10,000 BC or earlier, based on rainfall erosion.
Graham Hancock proposes an advanced Ice Age civilisation was finally destroyed by cataclysmic floods around 9600 BC — the same date Plato gives for the sinking of Atlantis, 9,000 years before Solon.
Bruce Masse dates a proposed comet strike in the Indian Ocean to 10 May 2807 BC by reading flood myths worldwide — the boldest attempt to date a cataclysm from mythology; the Burckle crater and its 'chevron dune' evidence remain unaccepted by mainstream impact science.
The Ottoman admiral Piri Reis compiles a world map from older charts, including an early depiction of the South American coast. Alternative writers claim it shows an ice-free Antarctica from a lost civilisation, while cartographers read the southern coastline as a distorted continuation of South America.
Richard Firestone and colleagues publish a paper in PNAS arguing that a fragmenting comet or impact around 12,900 years ago triggered the Younger Dryas cold snap, megafaunal extinctions and cultural change in North America. The claim remains sharply contested, with several teams unable to reproduce the reported impact markers.
Lake Toba in Sumatra erupts in the largest volcanic event of the last two million years. The once-popular theory that it nearly wiped out humanity is now contested — sites in India and South Africa show people carrying on through the ashfall.
A fingerbone from a young female, later dubbed 'Denisovan', is deposited in Denisova Cave in Siberia; the layer is broadly dated across roughly 76,000–52,000 years ago. Its 2010 genome revealed a previously unknown human population known almost entirely from DNA.
The 'hobbit' of Liang Bua, Homo floresiensis, is now thought to have survived on the Indonesian island of Flores until around 50,000 years ago, overlapping with the arrival of modern humans in the region. Earlier reports of survival to about 12,000 years ago were revised after the site's dating was reworked.
Ice sheets reach their greatest extent around 24,000–19,000 years ago; sea level stands roughly 120 metres lower than today, exposing vast coastal plains.
Animal bones from Bluefish Caves in the Yukon carry marks interpreted as butchery, radiocarbon-dated to roughly 24,000–22,000 years ago. If accepted as human, they place people in eastern Beringia during the Last Glacial Maximum, far earlier than the Clovis model allows; sceptics question whether the marks and their context are genuinely cultural.
Humans leave footprints beside Ice Age lake margins in New Mexico around 23,000–21,000 years ago — dated by seeds, pollen and quartz grains across 2021–2025 studies — placing people in the Americas during the Last Glacial Maximum, far earlier than long accepted.
Danny Hilman Natawidjaja's team claims the deepest buried layers of Gunung Padang in Java are man-made and up to 25,000 or more years old; the 2023 paper making this case was retracted in 2024.
Ice Age hunter-gatherers in France create the great painted caves of Lascaux, evidence of sophisticated symbolic culture within the accepted Palaeolithic world.
Arthur Posnansky argued in the early 20th century, from solar alignments of the Kalasasaya, that Tiwanaku in Bolivia was founded around 15,000 BC — a date modern archaeology rejects but alternative writers still cite.
The Meadowcroft Rockshelter in Pennsylvania yields stone tools and hearths that excavator James Adovasio dates to around 14,000 years ago or more, challenging 'Clovis-first'. Critics long argued the deep radiocarbon dates might be contaminated by ancient carbon, though the site remains among the more widely respected pre-Clovis candidates.
Sea level surges by 14–18 metres in a few centuries around 14,600 years ago, one of the fastest floods of coastline in human experience.
Foragers camp beside a creek in southern Chile around 14,500 years ago, leaving hearths, wooden structures and even seaweed — the site whose 20-year fight for acceptance broke the Clovis-first model of the peopling of the Americas.
Martin Sweatman and colleagues interpret the animal carvings on Göbekli Tepe's Vulture Stone as a date stamp recording a Taurid comet strike around 10,950 BC; the excavation team rejects the reading.
Northern Hemisphere temperatures crash back to near-glacial conditions within decades, beginning a 1,200-year cold snap recorded in Greenland ice cores.
Under the contested Younger Dryas Impact Hypothesis, fragments of a giant comet strike or airburst over North America and beyond, triggering the cooling, wildfires and megafaunal extinctions.
Robert Bauval and Graham Hancock argue the Giza pyramid layout mirrors Orion's Belt as it appeared c. 10,500 BC, when the Sphinx would have gazed at the constellation Leo — the proposed 'ground plan' date for the plateau.
In his revised chronology, geologist Robert Schoch places the original carving of the Great Sphinx at the end of the last Ice Age, around 10,000 BC or earlier, based on rainfall erosion.
Temperatures rebound abruptly — as much as 10°C in Greenland within decades — ending the Ice Age and opening the stable warm epoch in which all recorded civilisation arose.
Graham Hancock proposes an advanced Ice Age civilisation was finally destroyed by cataclysmic floods around 9600 BC — the same date Plato gives for the sinking of Atlantis, 9,000 years before Solon.
Pre-Pottery Neolithic hunter-gatherers in southeastern Turkey raise monumental rings of carved T-shaped pillars — the oldest known megalithic architecture, securely dated by radiocarbon.
Another rapid pulse of sea-level rise around 11,300 years ago drowns coastal lowlands worldwide as the remaining ice sheets decay.
After more than a millennium of use, the enclosures are progressively infilled and abandoned — a deliberate or gradual burial that preserved the site until its excavation from 1995.
One of the world's largest Neolithic settlements is established in Anatolia, housing thousands in densely packed mudbrick houses rich in art and ritual for over a thousand years.
A huge submarine landslide off Norway sends a tsunami across the North Sea, helping to finally submerge Doggerland, the inhabited plain that once connected Britain to Europe.
A massive underwater slope collapse off Norway sends a tsunami across the North Sea, inundating low-lying Doggerland that once joined Britain to continental Europe. The event is sometimes invoked in flood-memory and lost-land narratives, though geologists treat it as a well-dated natural catastrophe.
In Ryan and Pitman's contested hypothesis, the rising Mediterranean bursts through the Bosphorus and catastrophically refills the Black Sea basin, drowning Neolithic shorelines — proposed as the memory behind Near Eastern flood myths; gradualist models dispute the violence of the event.
The Varna necropolis on the Bulgarian Black Sea coast holds the oldest known worked gold, buried with a few high-status individuals around 4600–4200 BC. It is cited as some of the earliest clear evidence of social hierarchy and metalworking wealth in prehistoric Europe.
Narmer unites Upper and Lower Egypt, founding the First Dynasty; hieroglyphic writing and the pharaonic state emerge from centuries of documented predynastic development.
Bruce Masse dates a proposed comet strike in the Indian Ocean to 10 May 2807 BC by reading flood myths worldwide — the boldest attempt to date a cataclysm from mythology; the Burckle crater and its 'chevron dune' evidence remain unaccepted by mainstream impact science.
Imhotep builds Egypt's first monumental stone pyramid at Saqqara, beginning the rapid, traceable evolution of pyramid engineering over the following century.
Khufu's pyramid at Giza is finished around 2560 BC, dated by radiocarbon, quarry marks, workers' settlements and the Wadi al-Jarf papyri of the official Merer, which log limestone deliveries to the site.
In the consensus view the Sphinx is carved from the Giza bedrock during the reign of Khafre, alongside his pyramid and valley temple complex.
The volcanic island of Thera (Santorini) explodes, burying the Bronze Age town of Akrotiri and battering Minoan Crete with tsunamis — the best-documented candidate for a real cataclysm behind the Atlantis story, though its exact date is still fought over.
The bronze-and-gold Nebra Sky Disk, showing the sun or moon, a crescent and a cluster read as the Pleiades, is made in Bronze Age central Germany and dated to around 1800–1600 BC. It is widely regarded as the oldest concrete depiction of astronomical phenomena, a centrepiece of archaeoastronomy.
Around 1177 BC a wave of destruction ends or weakens the Hittite, Mycenaean and other eastern Mediterranean powers, with Egyptian records blaming raiding 'Sea Peoples'. Historians debate whether the cause was invasion, drought, earthquake storms, systems collapse or some combination.
The Greek city of Helike sinks in a single night of earthquake and wave on the Gulf of Corinth — a documented drowned city, rediscovered in 2001, that classical writers knew and Plato's contemporaries would have remembered as he wrote of Atlantis a dozen years later.
In the Timaeus and Critias, Plato describes Atlantis and its destruction 9,000 years before Solon — the sole ancient source for the story, read as allegory by scholars and as memory by alternative researchers.
Greek craftsmen build a geared bronze computer that models the sun, moon, eclipses and planets — technology of a complexity not seen again for over a millennium, and the strongest proof that ancient knowledge really could be lost.
Mainstream archaeology dates the monumental core of Tiwanaku, including the Kalasasaya and Gateway of the Sun, to a state that flourished around AD 500–1000 — millennia after Posnansky's proposed date.
The Ottoman admiral Piri Reis compiles a world map from older charts, including an early depiction of the South American coast. Alternative writers claim it shows an ice-free Antarctica from a lost civilisation, while cartographers read the southern coastline as a distorted continuation of South America.
A cosmic body explodes above the Siberian taiga near the Tunguska River, flattening some 2,000 square kilometres of forest without leaving an impact crater. It stands as the best-documented large airburst in recorded history and a key reference point for debates over ancient cometary catastrophes.
Richard Firestone and colleagues publish a paper in PNAS arguing that a fragmenting comet or impact around 12,900 years ago triggered the Younger Dryas cold snap, megafaunal extinctions and cultural change in North America. The claim remains sharply contested, with several teams unable to reproduce the reported impact markers.
Lee Berger's team announces, via preprints and a Netflix documentary, that small-brained Homo naledi deliberately buried its dead and made wall engravings in the Rising Star cave around 250,000 years ago. Many mainstream palaeoanthropologists reject both the evidence and the manner of its release, making it a notable case of intra-scientific dispute.