Explore Snowdon with ease and marvel at the beautiful sceneries of Northern Snowdonia. Our OS explorer range is in 1:25 000 scale, meaning 4cm is 1km (2½ inches is 1 mile). This map covers Northern Snowdonia in both English & Welsh. It contains key information so you can immerse yourself among the beautiful valleys and discover the majestic mountainside. It has six routes to the summit, providing lots of options to explore the largest mountain in Wales.