San Antonio Zoo excavation uncovers Alamo's limestone quarry origins
Renovations at San Antonio Zoo reveal the quarry that supplied limestone for the Alamo, deepening historical ties.
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Second tomb of ancient Egyptian pharoah discovered in major breakthrough for archaeologists
Dr Litherland believes the second tomb lies beneath a 23-metre man-made pile of limestone, ash, rubble and mud plaster near Luxor. The ancient Egyptians designed this structure to appear as part ...