* Located 13km West of Byaduk Caves on the 'Old Crusher Road'
* Observation site only - no walks have been established
* Some mounds are up to 10 metres high
West of Byaduk Caves, near the limits of the Harman’s Valley flow are a number of unusual clusters known as Lava Tumuli or ‘Blisters’. Lava Tumuli are clusters of unusual circular mounds or hammocks of rocks, up to 10 meters high and 20 meters in diameter, caused by the lava flow.
The Lava Tumuli can be seen also the edge of the Harman’s Valley flow at Wallacedale, 13km west of Byaduk Caves on the Old Crusher Road.