SIGN MARK LEHNER AERA STAFF BIOS CONTACT PROJECTS LOST CITY THE PYRAMID BUILDERS SPHINX PROJECT GIZA PLATEAU PUBLICATIONS NEWSLETTER ANNUAL REPORTS BOOKS GIZA PAPERS LECTURES RESOURCES BLOG FIELD SCHOOL ANALYSIS PUBLICATION SUPPORT GEOLOGY THE SPHINX CUTTING LAYERS ARGUMENTS DATE 4TH DYNASTY EGYPT GEOLOGICAL FORMATION THE NATURAL LIMESTONE MILLION YEARS AGO LEAVING THE SEA LAGOON ABOVE SHOAL CORAL REEF THE PLATEAU MILLIONS QUARRIED BLOCKS CUT LYING HARDER LABEL GEOLOGICAL MEMBER THE WORK GEOLOGIST GAURI GEOARCHAEOLOGY STRATUM THE STATUE BRITTLE ROCK THE ANCIENT LAYER RISES HEIGHT FEET RUMP BODY SEVEN ALTERNATE RISE THE NECK THIS IS GOOD BUILDING DURABILITY EXPLAINS REMARKABLE PRESERVATION FACE STATUES RAVAGED WEATHERING SHOWING LAYERING POPULAR THEORY OLDER OLD KINGDOM TOMB EXACT SHOWS PATTERN QUARRY EXTERIOR THE TOMB MENKAURE SHOULD WEATHERED UNLESS WATER WETTER IN FACT METERS HIGHER THE DIFFERENCE PHYSICAL PROPERTIES THE ROCK CONDITIONS THE AGE ANCIENT REPAIRS RECENT STONES FELL MASONRY VENEER THE LEFT HIND PIECE THE RIGHT SHOULDER IN WINDY DAY YOU CAN WATCH FLAKES BLOW THE WALLS SUPREME COUNCIL OF ANTIQUITIES 1990S THE LATEST NEW KINGDOM THERES REQUIREMENT AN AGE EXPLAIN PRESENT STATE ASIDE WE CAN EVIDENCE PHARAOH PROGRAM SEARCH PRIVACY TERMS OF USE CREDITS ANCIENT EGYPT RESEARCH ALL RIGHTS RESERVED