OS Landranger map 124 covers Cardigan Bay & the surrounding area, Porthmadog is frequently named the gateway to Snowdonia National Park & with stunning beaches & the majestic Snowdonian mountains as a backdrop, it is a fantastic holiday destination. To the south lies the charming town of Dolegllau at the foot of the Cader Idris mountain range. Both towns are a great base for exploring Snowdonia & for watching the rich array of wildlife. With this map you will receive a code for use on your i OS or Android smartphone or tablet. Find our more at Mobile Download FAQ. The OS Landranger map for Porthmadog & Dolgellau is available in both the standard paper version & weatherproof " Active" version.