2022Visit Gibraltar - First Day Cover

St Michael’s Cave - St Michael’s Cave was long believed to be bottomless. This probably gave birth to the story that the Rock of Gibraltar was linked to the Africa by a subterranean passage under the Strait of Gibraltar. The famous macaques were said to have come to Gibraltar through this subterranean passage. Pomponious Mela, one of the earliest geographers who lived about the beginning of the Christian era, spoke about the cave in his writings.