Dights Falls /ˈdaɪts/ is located in Melbourne, Victoria just downstream of the junction of the Yarra River with 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.