Red Rock was a stop on the railway located just south of Nipigon at Milepost 82.4. While plans called for a station named Crawford to be established there when the line was built, nothing occurred until the late 1930s when a paper mill was constructed in the community.
There was no siding in Red Rock, but a spur was constructed at the same time as the paper mill. Eventually, several side tracks were built that acted as storage rails for cars being shunted to and from the paper mill. Canadian Pacific, who had initially built their own spur to the mill west of the CNR station and over the CNR rails, later moved their transfer line to the east. It crossed the CNR mainline approximately 80 metres east of Highway 628 on two sets of switches. The CNR line, which was unsignalled, had two signals installed east and west of the junction point to facilitate this arrangement.