Twins Canyon is a dual canyon system. Two short canyons drain into a small, well hidden gorge that opens onto the Wolgan Valley.
The northern canyon is a long straight sheer-sided slot that might have been sliced with a knife. The canyon has 2 arms, again with sheer walls.
The southern canyon is a narrow meandering slot chewed out of the surrounding rock.
Ben Bullen 8931-4S
Wollemi National Park (NSW)