Description: Magnis (or Carvoran Roman Fort) was a fort on Hadrian's Wall, in the Roman province of Britannia. Magnis was originally built to guard the junction of the northbound Maiden Way with the Stanegate, the key supply route linking Coria (Corbridge] in the east to Luguvalium (Carlisle) in the west. As such it pre-dates Hadrian's Wall. Its ruins are located at Carvoran in the civil parish of Greenhead in the English county of Northumberland. Magnis is one of 16 Roman forts along Hadrian's Wall; there are also 80 smaller milecastle forts and 158 turrets along its length. Magnis is the location of the Roman Army Museum run by the Vindolanda Trust. Artifacts recovered at Magnis includie a two foot long iron spearhead, found at a depth of 36 feet (11 m) in a well, and the well-known modius, a bronze corn-measure. The Maiden Way Roman road runs south from Magnis to Kirkby Thore near Penrith.