Pyramid age debate and 27-year construction window questioned. Conventional estimates place most pyramid construction during the Fourth Dynasty (circa 2600-2500 BC) Recent estimates suggest the Great Pyramid took 27 years to build, down from earlier 20-30 year ranges Speaker believes the groundwork and earlier construction phases at Giza predate the conventional timeline

Conventional estimates place pyramid construction in the Fourth Dynasty (circa 2600-2500 BC), with the Great Pyramid recently estimated at 27 years, down from earlier 20-30 year estimates. The speaker believes groundwork at Giza predates conventional timelines. If a labyrinth exists below, the required labor would blow past any 30-year construction window.

Key Facts

  • Conventional estimates place most pyramid construction during the Fourth Dynasty (circa 2600-2500 BC)
  • Recent estimates suggest the Great Pyramid took 27 years to build, down from earlier 20-30 year ranges
  • Speaker believes the groundwork and earlier construction phases at Giza predate the conventional timeline
  • One archoastronomer's data supports a Fourth Dynasty date for the Sphinx
  • If a labyrinth exists beneath Giza, the required labor would destroy the 30-year construction timeline

Related site: The Great Pyramid of Giza — view location, images, and history on the Ancient Nerds map.