Ordnance Survey Maps

Harlech Porthmadog and Bala - OS Explorer Map OL18


Harlech, Porthmadog & Bala - OS Explorer Map OL18.

Trusted walking maps for those doing day trips orlonger more challenging hikes. Whether you’re passionate about cycling, mountain biking, walking or horse riding, take the explorer map with you and get the most out of your adventures.

Showing part of the Snowdonia National Park.

Sheet: OL18 (1:25000)


  • Manufacturer: Ordnance Survey
  • Map Area: Wales
  • Map Number: OL18
  • Scale: 1:25000


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