✨OS Maps LAYERS ✨ OS Maps has 4 layers to choose from when creating a route and viewing maps. 🧅 OS Standard Mapping is a free, simple map and a great starting point for planning activities. 🧅 Topographic mapping has more detail and shows OS’s Explorer and Landranger maps. 🧅 Aerial maps shows hi-res imagery, great for seeing the terrain and land use. 🚲 You can also add the National Cycle Network layer to your map to see cycle routes across the UK with the toggle. | Ordnance Survey