Hadrian’s Wall is one of the most famous historical sites in the British Isles. Construction began around 122 CE and the wall stretched for 73 miles across northern England. It once marked the edge of the Roman Empire. Several sections and fortifications of the wall remain today and are a popular tourist attraction. However, one site owes its interest more to Hollywood than to the ancient Romans. There are several natural channels in the wall carved by glacial meltwater. In one such channel, a lone sycamore tree stands. This has created…
