Old Polmont was situated on a raised beach overlooking the Firth of Forth and the Ochils. There were two Roman temporary marching camps, one on either side of what is now Grangemouth Golf Course: on the western side was Little Kerse, and on the eastern side was Polmont Hill. The Antonine Wall ran through Polmont from Mumrills, the largest fort on the wall, west of Polmont. Remains of the wall can best be seen in Polmont Woods (access by footpath next to motorway bridge).