What do you expect from a National Park? A scenic river, gushing waterfalls, mountain backdrops, well sign-posted walking tracks, facilities to rent mountain bikes or ponies? It's all here in this most beautiful part of Wales and there are expert guides on hand to help you plan your family day out or teach the kids a little about mountain climbing. So dig out your rucksack, click on their website and start thinking about what to take for your picnic.