Rottnest is an ideal location for cycling and with no traffic (except service vehicles) on the roads and a network of cycling trails it is a safe and efficient means of seeing the island. However there is also a network of four walking trails called the Wadjemup Bidi and we set off to explore these. Crossing over on a day ferry (and lucky to see a whale breach in the distance!) we were ambitious at the start and planned to do the Gabbi Karniny Bidi and the Ngank Yira Bidi, ea