Volcanoes

Heavily eroded composite scoria and lava hill, 6km West of Learmonth.

Mt Kororoit is a heavily eroded composite lava and scoria cone, located 5km South West of Diggers Rest, North West of Melbourne. It has a cap of lava on it's summit which formed later in it's development.

This is a large composite volcano of scoria and lava with over 200 m of local relief. The summit of dome-shaped without a major crater. It is reported that a small open spatter vent 8 m deep with a 1 m wide entrance occurs at the summit. There are two prominent parasitic vents - the larger at the southwestern base of the mountain and a smaller one on the northeastern flank. Lava interbedded with the scoria outcrops on the western slopes and there are extensive lava flows to the north. Blocks of Ordovician country rock occur in the ejecta.

Mount Holden (412 m) is one of the most prominent of the eroded volcanic hills between Sunbury and Gisborne. It has a complex summit with rocky cliffs and ridges facing east and a gentler western slope with fewer outcrops. The outcrops are the last of the lava flows from the summit area of the volcano, the vent becoming infilled with this solidified lava and surrounded by a rim of scoria. Erosion has since removed the scoria, leaving the rims of lava around the summit which obscure the vent of the volcano.

This prominent hill is comprised of scoria cones overlying lava flows (source DPI). There are also associated lava flows in the surrounding country.

A very prominent breached scoria cone next to the Hume Hwy at Beveridge, 50 kms north of Melbourne. This was one of a small number of eruption points just to the north of the city that produced the lava flows which cover much of the northern suburbs.

This rather prominent scoria cone has a deep crater and a breach on the south side.  Access is very good, with a camping area in the crater and a road around the rim.

Mt Elephant is a large breached scoria cone with a lava dome and surrounding lava flows.