
Red granite drill core
2686-2613 BCE
2686-2613 BCE
1921
1914
1921
1910
circa 1910
1918
1918
circa 1910
circa 1910
1920
1917
1916
1916
circa 1927
1914-1918
1925
1926
1910
1916-1918
1923
1923
1916
1859; 1986
1920
1915
1917
1909
1909
1910
1917
1912
1923
1916
1912
1922
1922
1910-1920
1913
1945-50
1913
1925
1925
1914
1913
1910
1912
1927
1919-1920
1925