Summit Tank is a location where
banker or pusher engines were taken off Moss Vale bound trains and for extra braking were added to heavy Wollongong or Port Kembla bound trains. Summit Tank had a passenger platform, train crew amenities and a manual
turntable for turning locomotives and ash pits. Summit Tank still sees the occasional bank engine with heavy steel trains regularly using the Unanderra to Moss Vale line to gain access to the Main South Line to Melbourne. Other traffic on the line includes container trains, bulk wheat and other grain trains, mostly from southern New South Wales; coal trains from Tahmoor; western coal trains using the line during Illawarra line trackwork; limestone trains from Medway, as well as the once-a-month
Cockatoo Run to and from Sydney. Summit Tank has a mainline and
passing loop with a platform for safeworking duties including a local control panel and radio antenna for train operations. Further towards Moss Vale there is a platform where Cockatoo Run passengers can alight to visit a scenic look-out on the edge of the
Illawarra Escarpment, with views over
Lake Illawarra and the
Pacific Ocean. == References ==