Afternoon in Orroral Valley
Namadgi National Park

Orroral Valley is the next valley east of the Cotter. Its a naturally treeless frost hollow where the heavy soil and the cold air draining from the surrounding hills creates an environment that most trees can't tolerate. The dominant vegetation in frost hollows is usually a thick blanket of lumpy tussock grass that makes for very slow going by bike, but there's a fairly good track through Orroral.