I know that the Hadrian's Wall isn't just one place, but one that stretches over a great distance. I'll be travelling around the UK in about 2 weeks. I don't have access to a car and I'll be using public transportation all the way. The Lonely Planet guide mentioned Carlisle as one place where I can start the tour, but I don't know to end it and then take the bus to a different city. Can someone suggest me how to do it with ease?