Plentiful on both scores and good fun. The island has a few well frequented roads and even more paths in the pristine forests. The walks are all graded from Class 1-6 so you need to chose them carefully depending on your fitness level. The highest is Mount Gower at 875 metres and then Mt Ligbird at 777 metres.
We decided to go half way up to the Goats House Cave, a Class 4 walk, on Mount Ligbird via Transit Hill with some memorable views of the island - the forests are full of ferns and kentia palms, the biggest banyans I have seen, delicate orchids and wedding lilies- some 86% of the plants are found nowhere else. There is always something to see and admire along the paths, the startling cliffs, the birdlife, the flowers and scents. A pair of currawongs singing sweetly.
We climbed to the forest edge on Mount Ligbird together and C climbed Mount Gower with a walking group the following day.