King’s Canyon is one of the dramatic natural attractions of the Alice Springs/Uluru area. It can be reached from Alice Springs via the Mereenie Loop Road (about 330 km, 4wd recommended) or from Yulara (about 310 km, all sealed).
There are various accommodation options not far from the Canyon, including camping at King’s Creek Station.
The Rim Walk around the top of the Canyon is moderately strenuous, and will normally take 3 to 4 hours. The scenery is spectacular. If you look carefully at the picture, you can see some human figures at the edge of the Canyon on the far side. One of the interesting (? scary) features of the walk is that there are no guard rails. You can sit on the edge and dangle your legs if you want to.