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Old Maps of Porthmadog, Gwynedd for Metal Detecting

Plan your next treasure hunt with 26 historic maps of Porthmadog. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Porthmadog.

Porthmadog, Gwynedd maps

(26)
  1. 1887 Map of Caernarvonshire XXXIV.NE, 1888 Print
    1887 Map of Caernarvonshire XXXIV.NE, 1888 Print
    1887 Caernarvonshire XXXIV.NE
    1888 Print · Ordnance Survey
    Covers Porthmadog, including Dolbenmaen, Portreuddyn, and other nearby areas
  4. 1887 Map of Merionethshire X.SE, 1888 Print
    1887 Map of Merionethshire X.SE, 1888 Print
    1887 Merionethshire X.SE
    1888 Print · Ordnance Survey
    Covers Porthmadog, including Pwllgoleulas, Pwllgolaulas, and other nearby areas
  7. 1887 Map of Caernarvonshire XXXIV.SW, 1888 Print
    1887 Map of Caernarvonshire XXXIV.SW, 1888 Print
    1887 Caernarvonshire XXXIV.SW
    1888 Print · Ordnance Survey
    Covers Porthmadog, including Criccieth, Dolbenmaen, and other nearby areas
  10. 1887 Map of Merionethshire XVIII.NE, 1888 Print
    1887 Map of Merionethshire XVIII.NE, 1888 Print
    1887 Merionethshire XVIII.NE
    1888 Print · Ordnance Survey
    Covers Porthmadog, including Harlech, Talsarnau, and other nearby areas
  13. 1887 Map of Caernarvonshire XLII.NW, 1888 Print
    1887 Map of Caernarvonshire XLII.NW, 1888 Print
    1887 Caernarvonshire XLII.NW
    1888 Print · Ordnance Survey
    Covers Porthmadog, including Criccieth, Gwynedd, and other nearby areas
  16. 1887 Map of Merionethshire XI.SW, 1888 Print
    1887 Map of Merionethshire XI.SW, 1888 Print
    1887 Merionethshire XI.SW
    1888 Print · Ordnance Survey
    Covers Porthmadog, including Llanfrothen, Talsarnau, and other nearby areas
  19. 1899 Map of Caernarvonshire XXXV.SW, 1901 Print
    1899 Map of Caernarvonshire XXXV.SW, 1901 Print
    1899 Caernarvonshire XXXV.SW
    1901 Print · Ordnance Survey
    Covers Porthmadog, including Llanfrothen, Talsarnau, and other nearby areas
  22. 1899 Map of Caernarvonshire XLII.NW, 1901 Print
    1899 Map of Caernarvonshire XLII.NW, 1901 Print
    1899 Caernarvonshire XLII.NW
    1901 Print · Ordnance Survey
    Covers Porthmadog, including Criccieth, Gwynedd, and other nearby areas
  25. 1899 Map of Caernarvonshire XLII.NE, 1901 Print
    1899 Map of Caernarvonshire XLII.NE, 1901 Print
    1899 Caernarvonshire XLII.NE
    1901 Print · Ordnance Survey
    Covers Porthmadog, including Harlech, Talsarnau, and other nearby areas
  28. 1899 Map of Caernarvonshire XXXIV.NE, 1901 Print
    1899 Map of Caernarvonshire XXXIV.NE, 1901 Print
    1899 Caernarvonshire XXXIV.NE
    1901 Print · Ordnance Survey
    Covers Porthmadog, including Dolbenmaen, Portreuddyn, and other nearby areas
  31. 1899 Map of Caernarvonshire XXXIV.SE, 1901 Print
    1899 Map of Caernarvonshire XXXIV.SE, 1901 Print
    1899 Caernarvonshire XXXIV.SE
    1901 Print · Ordnance Survey
    Covers Porthmadog, including Pwllgoleulas, Pwllgolaulas, and other nearby areas
  34. 1899 Map of Caernarvonshire XXXIV.SW, 1901 Print
    1899 Map of Caernarvonshire XXXIV.SW, 1901 Print
    1899 Caernarvonshire XXXIV.SW
    1901 Print · Ordnance Survey
    Covers Porthmadog, including Criccieth, Dolbenmaen, and other nearby areas
  37. 1913 Map of Caernarvonshire XXXIV.NE, 1919 Print
    1913 Map of Caernarvonshire XXXIV.NE, 1919 Print
    1913 Caernarvonshire XXXIV.NE
    1919 Print · Ordnance Survey
    Covers Porthmadog, including Dolbenmaen, Portreuddyn, and other nearby areas
  40. 1913 Map of Caernarvonshire XLII.NE, 1919 Print
    1913 Map of Caernarvonshire XLII.NE, 1919 Print
    1913 Caernarvonshire XLII.NE
    1919 Print · Ordnance Survey
    Covers Porthmadog, including Harlech, Talsarnau, and other nearby areas
  43. 1913 Map of Caernarvonshire XLII.NW, 1920 Print
    1913 Map of Caernarvonshire XLII.NW, 1920 Print
    1913 Caernarvonshire XLII.NW
    1920 Print · Ordnance Survey
    Covers Porthmadog, including Criccieth, Gwynedd, and other nearby areas
    2 unique versions available
  46. 1913 Map of Caernarvonshire XXXIV.SW, 1920 Print
    1913 Map of Caernarvonshire XXXIV.SW, 1920 Print
    1913 Caernarvonshire XXXIV.SW
    1920 Print · Ordnance Survey
    Covers Porthmadog, including Criccieth, Dolbenmaen, and other nearby areas
  49. 1913 Map of Caernarvonshire XXXV.SW, 1920 Print
    1913 Map of Caernarvonshire XXXV.SW, 1920 Print
    1913 Caernarvonshire XXXV.SW
    1920 Print · Ordnance Survey
    Covers Porthmadog, including Llanfrothen, Talsarnau, and other nearby areas
    3 unique versions available
  52. 1913 Map of Caernarvonshire XXXIV.SE, 1920 Print
    1913 Map of Caernarvonshire XXXIV.SE, 1920 Print
    1913 Caernarvonshire XXXIV.SE
    1920 Print · Ordnance Survey
    Covers Porthmadog, including Pwllgoleulas, Pwllgolaulas, and other nearby areas
  55. 1938 Map of Caernarvonshire XXXIV.SE, 1948 Print
    1938 Map of Caernarvonshire XXXIV.SE, 1948 Print
    1938 Caernarvonshire XXXIV.SE
    1948 Print · Ordnance Survey
    Covers Porthmadog, including Pwllgoleulas, Pwllgolaulas, and other nearby areas
  58. 1938 Map of Caernarvonshire XLII.NE, 1948 Print
    1938 Map of Caernarvonshire XLII.NE, 1948 Print
    1938 Caernarvonshire XLII.NE
    1948 Print · Ordnance Survey
    Covers Porthmadog, including Harlech, Talsarnau, and other nearby areas
  61. 1938 Map of Caernarvonshire XXXIV.SW, 1948 Print
    1938 Map of Caernarvonshire XXXIV.SW, 1948 Print
    1938 Caernarvonshire XXXIV.SW
    1948 Print · Ordnance Survey
    Covers Porthmadog, including Criccieth, Dolbenmaen, and other nearby areas
  64. 1949 Map of Caernarvonshire XLII.NE, 1953 Print
    1949 Map of Caernarvonshire XLII.NE, 1953 Print
    1949 Caernarvonshire XLII.NE
    1953 Print · Ordnance Survey
    Covers Porthmadog, including Harlech, Talsarnau, and other nearby areas
  67. 1949 Map of Caernarvonshire XXXIV.NE, 1953 Print
    1949 Map of Caernarvonshire XXXIV.NE, 1953 Print
    1949 Caernarvonshire XXXIV.NE
    1953 Print · Ordnance Survey
    Covers Porthmadog, including Dolbenmaen, Portreuddyn, and other nearby areas
  70. 1949 Map of Caernarvonshire XXXIV.SE, 1954 Print
    1949 Map of Caernarvonshire XXXIV.SE, 1954 Print
    1949 Caernarvonshire XXXIV.SE
    1954 Print · Ordnance Survey
    Covers Porthmadog, including Pwllgoleulas, Pwllgolaulas, and other nearby areas
  73. 1949 Map of Caernarvonshire XXXV.SW, 1954 Print
    1949 Map of Caernarvonshire XXXV.SW, 1954 Print
    1949 Caernarvonshire XXXV.SW
    1954 Print · Ordnance Survey
    Covers Porthmadog, including Llanfrothen, Talsarnau, and other nearby areas
Showing maps 1-25 of 26

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Frequently asked questions

  • What are the different types of historical maps available for Porthmadog?
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