Bar Hill is not only the highest fort on the Antonine Wall, it is arguably the most impressive. Built by the Legio II, Legio VI and Legio XX, the walls of the praetorium are clear, as is a well at its centre. The outline of the military bathhouse with a small section of hypocaust is also visible. Above all, what is apparent at the site is the Antonine Wall's strategic strength. The views across the River Kelvin to the Campsie Hills and along the Wall to the Roman camps at Bearsden in one direction and Croy in the other are virtually uninterrupted, even today.
A good starting point to get a sense of the site is L Keppie, "Excavations at the Roman Fort of Bar Hill, 1978-82", Glasgow Archaeological Journal 12 (1985), pp. 49-81. Fortunately it is available online. Details of other digs are at the RCAHMS website. Keppie describes the site:
The fort proved to have an area of 1.37 hectares (3.38 acres), measured over the ramparts. In the centre, fronting on to the via principalis, was the headquarters building (principia), with a store-building and possible workshop lying to the E; timber-framed buildings, identified as barracks and stores, occupied the areas to N and S. Just inside the NW corner of the fort was a stone-built bathhouse. No trace was observed of the commanding officer's house which might normally be expected to lie to one side of the headquarters, here presumably on its W flank.
Finds have been good - the greatest number of coins from any Wall fort, for example - and numerous inscriptions have also been uncovered. One names the First Cohort of Baetasians (RIB2169) as early occupiers of the fort, probably from the late AD130s.
One of the most significant inscriptions is an altar found in 1895 and dedicated to the god Silvanus (RIB2167).
DEO SILVANO CARISTIANIVS IVSTINIANVS PRAEF COH I HAMIOR V S L L M
Now in the Huntarian Museum in Glasgow it shows that the fort was occupied in the late AD150s by the First Hamian Cohort from Syria under the command of Caristianius Justinianus. Another inscription (RIB2172) is the tombstone of Gaius Julius Marcellinus, a previous commander of the same cohort.
The remains of the Roman military bathhouse
The line of the Antonine Wall at Bar Hill
The modern cairn that marks the highest point of the Antonine Wall