The Bargo River cuts a sandstone gorge through the bushland around Bargo and Tahmoor, in the south of Wollondilly. Bush tracks along the river lead to swimming holes, rock pools and small waterfalls tucked inside the canyon. It’s a natural, rugged setting with uneven ground and rocky sections, which makes it a good outing for people who enjoy a bush adventure close to home. The area is also known for the historic Bargo River railway viaduct, built in 1919.