SAR Summit Trackmarks V2

For SAR Peterborough Narrow Gauge Division v2.0 only  Track Marks  Destinations for "Drive Via Trackmark  NAME " or "Drive To Trackmark  NAME " AI commands.  Approach from Quorn    Summit Main Approach Up    Approach from Port Augusta      Summit Main Approach Dn    Summit Halt Up  Summit Halt Dn    Summit Siding  DE