The "Llyn Peninsula Bangor to Porthmadog Wales Coastal Path Official Guide 2019" is a hardcover book published by the Wales Coastal Path. Written by Rogers & Bowerman, this guide provides detailed information on the Llyn Peninsula, specifically covering the route from Bangor to Porthmadog. The book is in English and is an official guide for those looking to explore the coastal path in the United Kingdom. Perfect for those interested in hiking and discovering the beauty of the Llyn Peninsula.