Kapersburg Roman fort yields temple to Mars

Archaeologists have uncovered a small, well-preserved Roman temple dedicated to Mars, complete with votive statues of Victory and dedicatory inscriptions, at the Kapersburg fort in Hesse. The 1,800-year-old temple was discovered in the wooded foothills of the Taunus mountains, roughly 16 miles north of Frankfurt. The discovery was announced in a September 25 statement from the Hessen State Office for Monument Preservation.

Remains of a statue likely depicting Mars were found near the temple. A small bronze statuette of a winged figure holding a palm branch and laurel wreath, representing the Roman goddess Victoria, was also recovered. The temple structure was identified as a rectangle about 16 feet long, with well-preserved walls about a foot and a half thick forming a small square. Its strong foundation suggests it may have had an ambulatory or covered walkway. Two votive stones were found nearby.

Inside the temple, fragments of a dedicatory inscription were found. A portion has been translated and mentions the temple was dedicated to Mars, god of war. Kai Mückenberger, an archaeologist with Hessen Archaeology who led the excavation, said, "Inside the temple, we found several fragments of a dedicatory inscription."

Insights into religious practice on the Roman frontier

The temple’s open design, dedicatory fragments mentioning Mars, and nearby Victory statuette suggest soldiers and settlers sought divine protection and counsel at the border site. The temple and votive statues provide new insight into Roman religious beliefs on the empire's border. Katharina Grießhaber said settlers likely went to the temple to offer sacrifices for protection or counsel. The temple was part of a military settlement built in the third century to defend the Roman Empire's border against Germanic tribes.

The vicus reveals craft-focused settlement, not dense housing

Excavations of the vicus show fewer houses than expected but extensive evidence of craft activities like blacksmithing and bread baking, indicating a specialized zone for production rather than primary habitation. Prior to the 2024 excavations, practically nothing was known about the vicus near Kapersburg fort. The archaeological layers at the vicus are exquisitely preserved, starting right beneath the forest floor. The preserved layers include burnt material, which rarely survives in agricultural areas.

During excavations, fewer houses than expected were found, but more evidence of craft activities was discovered, such as blacksmith pits and ovens for drying wheat and baking bread. The craft activity evidence suggests the area may have been an intermediate zone or craft area, not directly adjacent to the fort. Extensive remnants of craft production were uncovered, including a smithy or blacksmith workshop. Researchers believe the smithy was later replaced with residential buildings.

Kapersburg’s place in the Roman frontier defense system

As part of the Upper German-Raetian Limes, the fort hosted the Numerus Nidensium auxiliary unit for about 150 years and remained one of the best-preserved border sites in the region. The Kapersburg fort was built in the early second century, likely under Emperor Trajan (A.D. 98-117) or Emperor Hadrian (A.D. 117-138). It was used by a unit of Roman soldiers and cavalry for about a century and a half, until around A.D. 275. The Upper German-Raetian Limes secured Roman territory north of the Alps. Kapersburg is considered one of the most well-preserved sites in the region of the Limes and has been studied since the late 1800s.

Future work planned at the exceptionally preserved site

Due to the site’s remarkable preservation beneath forest soil-uncommon in agricultural areas-Mückenberger’s team plans to return next year to continue excavating the vicus and temple precinct. The temple was located only a few inches beneath the surface in the forests of Germany’s Taunus Mountains, near the modern-day town of Rosbach vor der Höhe. Mückenberger stated that layers of preservation are unparalleled in Hesse due to lack of agriculture. He noted, "The astonishing thing is the exquisite preservation of the archaeological layers that start right beneath the forest floor." Mückenberger and his team plan to continue excavation of the site next year.