To paraphrase that well-known quote about Africa, those of you who've never been to northern Tanzania are to be envied, because you still have so much to look forward to. Northern Tanzania is a land of superlatives, from Africa's highest mountain to one of the greatest wildlife spectacles on the planet. But Kilimanjaro and the Serengeti are mere starting points to so many journeys of a lifetime. Mt Meru is Kilimanjaro's rival in both beauty and the challenge of climbing it, while the Crater Highlands could be Africa's most haunting landscape. When it comes to wildlife, there's Tarangire's baobab-and-elephant kingdom, Lake Manyara's tree-climbing lions and the flamingos of Lake Natron. And venturing down into Ngorongoro's crater can feel like returning to earth's first morning.