 Because it was built of clay/mud like the Deffufa of Nubia, time has taken its toll requiring periodic reconstruction.Pausanias (2nd century AD) mentions two buildings resembling pyramids, one, 19 kilometres (12 mi) southwest of the still standing structure at Hellenikon, a common tomb for soldiers who died in a legendary struggle for the throne of Argos and another which he was told was the tomb of Argives killed in a battle around 669/8 BC.Neither of these still survive and there is no evidence that they resembled Egyptian pyramids.