Short answers, pulled from the story.
The Upper Germanic-Rhaetian Limes, or ORL, is a 550-kilometre section of the former external frontier of the Roman Empire between the Rivers Rhine and Danube, running from Rheinbrohl to Eining. It has been a UNESCO World Heritage Site since 2005.
The Upper Germanic-Rhaetian Limes runs for 550 kilometres, from Rheinbrohl to Eining on the Danube.
The Upper Germanic-Rhaetian Limes was designated a UNESCO World Heritage Site in 2005.
Ancient historian Theodor Mommsen directed the Imperial Limes Commission, known as the RLK, after it was founded in Berlin in 1892.
Recent research argues the Upper Germanic-Rhaetian Limes functioned mainly as a monitored economic boundary rather than a purely military demarcation line. Guarded border crossings allowed brisk trade with peoples beyond the frontier, and Roman goods have been found as far as Jutland and Scandinavia.
Johann Alexander Döderlein was the first to record the limes's course in the Eichstätt region. In 1723, he became the first to interpret its meaning correctly, publishing the first scholarly treatise on it in 1731.