Just to the south of Alderbury Junction, where the abandoned Salisbury and Dorset Junction Railway left the line to Salisbury, the canal turned to the south-west, to avoid the high ground on which Alderbury stands. The A36 Alderbury bypass has in its turn obliterated part of the railway near the junction. The canal looped around ending at a road called Tunnel Hill, close to Alderbury House, a grade II* listed country house on the western edge of Alderbury, which was built in the late eighteenth century. A lake in the grounds is thought to have been built as part of the canal, and Tunnel Hill may reflect the fact that there would have been a tunnel just past the road, if the company had been able to finish the construction. The route of this final section is not easy to trace on a map, but it was not clearly defined on the 1881 map either, and there is some uncertainty about what was completed before all work ceased. Another feature of the canal was the feeder reservoirs. One remains, above the road from Alderbury to Farley at Pope's Bottom. The feeder passes under the road through an original bridge. A second reservoir was located to the south of the road, and although no longer there, its outline broadly follows a gap in the tree cover on the modern map.