these egyptian pillars have been 6 m or 20 ft tall

africa alley ancient antique antiquity archaeological archaeology archeology architecture block blocks building cairo carved civilization classical colonnade column columns complex construction corridor desert djoser egypt egyptian egyptology entrance exterior famous found great heritage historic historical history impressive interior landmark landscape light long memphis monument mystery narrow necropolis old passage past perspective pharaoh pillar pillars pyramid roofed row sahara sakkara saqarah saqqara scenics sightseeing site stability step stone tourism tourist travel unesco walkway world zoser