The Warren was a piece of land is situated to the west of the Priory between the beck running off from the lake and Streetgate to the south; the east side is flanked by the estuary. This Warren originates from the time of the monastery or soon after as a manorial warren; it was a ready supply of food from land that was marginal and not suitable for arable farming. The warren would still have been in use up until the late 19th century as the estate was still employing gamekeepers during this time.
The Ordnance Survey of 1850 shows a sandpit excavated on the warren. It is probable that this was dug to extract sand for the construction of the Priory Railway Station and Crossing
The line ran down the east side of the estate through the Warren, terminating just north of the Streetgate; the railway embankment continuing on for some 200m. A station was built on the west side and a short road connected it to the Priory; 240m north of the station a crossing with cottage was built to allow access from Brick Kiln Road to Conishead Bank.
For a time a passenger train service was run, but for some years before the 1914-1918 war this had dwindled to occasional excursion work and the line fell into disuse beyond North Lonsdale ironworks. The line was closed in 1917 and by 1953 the permanent way had been removed.
The 1891 census shows that the station master resided at the station and there were also two occupied cottages at the Priory Crossing, which was just north of the station. The railway station is now called South Lodge
The cache is situated next to an old railway bridge which was situated just beyond the farthest reach of the rails. The investment in the embankment and bridges beyond the station provides ample evidence of early optimism that the line would indeed be extended to at least Bardsea and perhaps to Barrow.
