{"id":8876,"date":"2026-04-22T11:14:19","date_gmt":"2026-04-22T11:14:19","guid":{"rendered":"https:\/\/www.europesays.com\/italy\/8876\/"},"modified":"2026-04-22T11:14:19","modified_gmt":"2026-04-22T11:14:19","slug":"archaeologists-discovered-a-roman-superhighway-buried-deep-underground","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/italy\/8876\/","title":{"rendered":"Archaeologists Discovered a Roman Superhighway Buried Deep Underground"},"content":{"rendered":"

\"Estimated3 min read<\/p>\n

Here\u2019s what you\u2019ll learn when you read this story:<\/p>\n

Archaeologists recently discovered a Roman canal from roughly the 1st century C.E. hidden beneath German farmland.The navigable shipping channel connected Roman boat traffic on the busy Rhine River to a Roman \u201cfortlet\u201d and nearby settlements.The highly engineered canal restructured the landscape of Germany\u2019s Upper Rhine Graben.<\/p>\n

Archaeologists working in German fields detected something odd below the surface: an unusually straight, riverbed-like anomaly that, upon further investigation, they discovered was actually an early Roman canal that once connected the Rhine River<\/a> with Roman Empire \u201cfortlets\u201d and settlements<\/a>. The canal\u2019s central purpose appears to have been related to the Roman fortlet at Trebur-Astheim, in the Hessische Ried region of Germany\u2019s Upper Rhine Graben.<\/p>\n

The canal was a major engineering project that reshaped the environment as early as the first century C.E., and it offers one of the only examples of a navigable Roman canal constructed north of the Alps<\/a> in the early Middle Ages. In a new study published<\/a> in the journal Land, a team of experts employed a number of methods, including magnetic gradiometry, electrical resistivity tomography, and sediment coring, to investigate the site and learn how much of this side channel was from deliberate human construction. The answer? All of it.<\/p>\n

Related Story<\/p>\n

\u201cThe canal at the burgus at Trebur-Astheim was not a secondary channel of the River Rhine but rather an artificial canal belonging to the Landgraben\/Schwarzbach fluvial system,\u201d the authors wrote. \u201cWe suggest that the discovered canal at Trebur-Astheim was constructed during a time when the rest of the River Landgraben was intensely used by the Romans.\u201d<\/p>\n

Experts uncovered a channel that was once eight feet deep and 50 feet wide, critical in water management in the region to \u201cguarantee the transportation of material and troops, securing the territory of the Roman Empire<\/a>.\u201d<\/p>\n

Constructed sometime between the first and fourth centuries C.E., the canal offered a direct link from the Rhine to the burgus at Trebur-Astheim, a late Roman fortlet used as an inland harbor, \u201cproviding a secure docking site for the transport of ware and troops along the Roman-Germanic border<\/a>.\u201d It\u2019s one of at least five such fortlets along Rhine tributaries, this one built under Emperor Valentinian I between 364 and 375 C.E. It features a main building with protective ditches and walls leading toward an artificial basin.<\/p>\n

Related Story<\/p>\n

\u201cThe burgus at Trebur-Astheim was built to provide a secure inland harbor on the eastern fringe of the late Roman territory,\u201d the authors wrote. The multi-story structure created a fortified perimeter and connected to the waterway in a style consistent with other fortifications constructed during the reign of Valentinian I.<\/p>\n

The now-buried canal offered the Romans a water-based superhighway<\/a> through a region they had a firm grasp on. The route even ran through the site of an earlier Roman military camp that had been occupied briefly around 14\u201320 C.E.<\/p>\n

Sediment cores revealed a clear sequence of Paleozoic<\/a> bedrock covered by Pleistocene<\/a> river gravel and topped by alternating layers of sandy channel deposits and fine-grained silt sediment. Experts believe the canal functioned into the eighth century C.E., well after the fall of Rome, as Merovingian and early Carolingian communities<\/a> maintained the passage. It may have even been critical in helping build the royal palace at Trebur, which made its first appearance in historical records around 829 C.E. When dredging ceased, the canal filled in, and it was eventually subsumed by the farmland the archaeologists were searching.<\/p>\n

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Tim Newcomb is a journalist based in the Pacific Northwest. He covers stadiums, sneakers, gear, infrastructure, and more for a variety of publications, including Popular Mechanics. His favorite interviews have included sit-downs with Roger Federer in Switzerland, Kobe Bryant in Los Angeles, and Tinker Hatfield in Portland.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"3 min read Here\u2019s what you\u2019ll learn when you read this story: Archaeologists recently discovered a Roman canal…\n","protected":false},"author":2,"featured_media":8877,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[637,6563,639,644,6564,638,3415,27,6562,3661],"class_list":["post-8876","post","type-post","status-publish","format-standard","has-post-thumbnail","category-rome","tag-content-type-news","tag-contentid-b6a6c58c-f4fe-47d6-8b75-04225f6fa18a","tag-displaytype-standard-article","tag-hasproduct-true","tag-listen_time-240","tag-locale-us","tag-read_time-4","tag-rome","tag-shorttitle-archaeologists-found-a-buried-roman-superhighway","tag-subsection-archaeology"],"_links":{"self":[{"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/posts\/8876","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/comments?post=8876"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/posts\/8876\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/media\/8877"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/media?parent=8876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/categories?post=8876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/italy\/wp-json\/wp\/v2\/tags?post=8876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}