HERE is a photo journal through the interior of the mastaba which we can see similar type stone working, including granite, as seen in the Giza pyrmaids.
Of particular note is a gabled ceiling that those found in G1 and G2: HERE.
And in another chamber the arch type gable ceiling found in G3:
Edited 1 time(s). Last edit at 26-Oct-17 05:24 by Thanos5150.