OS Explorer map OL 50 shows Loch Ericht, Loch Laggan and 16 of the surrounding Munros, as well as part of the Cairngorms National Park. This map replaces the previous OS Explorer map 393 for this area. The town of Dalwhinnie is the base for this area, and aside from the A86 and A9, there is no road access to most of this region.