The line and station can clearly been seen in the top left hand side of the pic. It was opened on 2 January 1895 and closed in January 1960. The Seacombe branch connected to a station in Mill Lane and then went onto Wrexham. The actual cut-through used by the railway is actually still used as the approach road to the Tunnel.
I remember using the station as part of a day out. I started at Woodside & took the train to West Kirby, via Hooton & the line which is now the Country Park. West Kirby to Bidston & change there for Seacombe. Seacombe to Liverpool by ferry, then the ferry back to Woodside. I'd looked at the timetable for the Wrexham to Seacombe train, which wasn't too frequent, which governed the time I spent at West Kirby. Made a great day out in the summer for a rail enthusiast (me).