Hobart Rivulet is a subterranean gem that starts at the foothills of Kunanyi (also known as Mount Wellington). It descends 544 meters over its seven-kilometer course down into the Hobart hinterland, eventually flowing through and underneath the city to the Derwent Estuary. Before the arrival of European colonizers, the stream was an important source of drinking water for Tasmania’s Indigenous Mouheneener tribe. When English settlers arrived, they displaced the Indigenous inhabitants and built the city of Hobart around the rivulet. Originally the stream discharged into the River Derwent near the modern-day Franklin Wharf,…