This is the Carneddau region of the Snowdonia National Park, bounded by the A55 to the north, the Nant Ffrancon valley (and A5) to the west, the Conwy valley to the east and the A5 to the south
You may take a tour either by clicking on one of the five hot spots on the map (which allow you to take a closer look). Alternatively, there is a page of thumbnail pictures, most of which are linked to a higher resolution image.