SOUTH WEST HIGHWAY TRAIL The South West Highway(SWH ) trail celebrates those cachers and admin who have contributed to Geocaching in Western Australia. The series travels along the South West Highway, which is a stretch of road that stretches from Armadale all the way to Picton close to Bunbury. The highway does not actually enter Bunbury - it stops at the industrial suburb of Picton, following Robertson Drive (Bunbury's ring road) for 1 km south before turning southeast past Bunbury Airport towards Boyanup. It continues for another 255km to Walpole, to give it a total length of 414km You are welcome to hide a cache along the SWH, but please keep the cache name format the same, eg SWH...****** Please don't hide a cache unless you or a sponsor can maintain it.