14:00Unearthing MysteriesSeries 2Episode 4: The Pharos Lighthouse of AlexandriaBBC Radio 7 Duration: 30 minutes Wed 30th Jun 2010, 14:00 on BBC Radio 7Professor Aubrey Manning investigates the fate of one of the most impressive and enigmatic buildings in history.GenresFactualHistoryFormatsDocumentariesBrandUnearthing MysteriesSeriesUnearthing Mysteries: Series 2 Source: BBC Online