Look closely and the history of Allen Banks reveals itself. 10,000 years ago the melting ice sheets carved the gorge and created the crags we can still enjoy today. There's also lots of reminders of its Victorian past; the tarn, originally dug out as a boating lake for the Victorians, now offers a home to wildlife. On a good autumn day you might spot a dipper, a heron or even an otter or kingfisher. With superb views of the Tyne Valley and Hadrian’s Wall in the distance, a walk to Morralee Tarn is something out of the ordinary.