>According to John Edgar the iron grill gate was installed by M. Maspero.

A quote would be nice. <

"Some years ago M. Maspero had a padlocked iron gate or grill-door fixed on top of this granite stone, and thus the generality of visitors are unable to explore the lower section of the Great Pyramid's interior system." Morton Edgar "Great Pyramid and Passages" p.168 (Revised reprint 1925).

The two photos showing the grill in the original version of the Edgar's book (1910) are taken before and after debris was removed and looking carefully at the originals there's nothing to suggest that there's anything amiss. There's no mystery here.

Morton wrote in a letter following his visit in the 1920s that he'd had the descending corridor completely cleared but I don't know when the grill was removed.

Jon

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