37°47′50″S 145°00′03″E / 37.79722°S 145.00083°E
Dights Falls is a rapid and weir on the Yarra River in Melbourne, Victoria, just downstream of the junction with the Merri Creek. At this point the river narrows and is constricted between 800,000-year-old volcanic, basaltic lava flow and a much older steep, silurian, sedimentary spur. The north side also contains abundant graptolite fossils in sedimentary sandstone.[1][2]