Blue Mountain National Park begins 60km west of Sydney. It's very accessible: a six-lane highway, double train tracks, and lots of buses connect Sydney to the park. It can get quite busy. All the viewpoints and trails in the park are tamed - perfect roads lead there, there is parking, fences, guardrails, and stone steps. I almost expected coin turnstyles.

The first stop was Wentworth Falls viewpoint. The Blue Mountains are a deeply cut plateau, with steep rock faces down to hilly and densely forested valleys. The falls drop into a circular canyon with a pool at the bottom, like an Aztec cenote except no princes are sacrificed here.

Passed through the main town of the Blue Mountains, Katoomba, a sleepy little town with restaurants and galleries, on the way to Echo Point. It has a similar fantastic panorama of canyons and valleys, and a view of the Three Sisters. They are three rock pinnacles off to one side. Another lookout, Evans Viewpoint nnear the town of Blackheath, has similar views and the Bridal Veil Falls, a thins but very tall waterfall; the water reaches the bottom only as a fine mist. The final stop was Sublime Point, with a view of the opposite side of the Three Sisters. It was late afternoon by this time, and mists started to roll in. They are very blue, giving the mountains their name.