Hi Kanga,

It seems after Petrie's effort Menkaure's base dimension lost the interest of surveyors as all eyes became (and remain) focused on Khufu's pyramid. The GPMP set station marks all over the plateau but still the cost and time to survey Menkaure's pyramid is akin to burning a pile of money for nothing other than confirming Petrie's results which are incomplete without the location of the NW corner. H 126, B 201.5 is the best available data. I took Petrie's comment regarding the NW corner and his measure from the NE corner to the center of pyramid entrance and doubled it to match the southern side length and found the west side length to match his 4153.8" and the west side also matched the azimuth he found. I visited the pyramid in 2020 to have a look, and the failure to find the NW corner becomes clear... the granite blocks knocked down by the Arab quarrymen 12-13th century (AD) is a daunting effort that I expect no survey team would undertake.

Best,

B.A.Hokom