page_title: Great Siege Tunnels
hierarchical_section_title: Great Siege Tunnels
caption_attribution_description: Gibraltar
context_page_description: The Great Siege Tunnels in the British Overseas Territory of Gibraltar, also known as the Upper Galleries, are a series of tunnels inside the northern end of the Rock of Gibraltar. They were dug out from the solid limestone by the British during the Great Siege of Gibraltar of the late 18th century.
context_section_description: The Great Siege Tunnels in the British Overseas Territory of Gibraltar, also known as the Upper Galleries, are a series of tunnels inside the northern end of the Rock of Gibraltar. They were dug out from the solid limestone by the British during the Great Siege of Gibraltar of the late 18th century.
caption: Guns look to the north defending The Rock from an attack by land
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