Tree and volcanic strata, Tower Hill T-Shirt

Tower Hill, in Victoria, declared Victoria's first National Park in 1892, was formed at least 30,000 years ago when a hot rising basaltic magma came into contact with the subterranean water table. The violent explosion that followed created the funnel-shaped crater (later filled by a lake) and the islands seen today. Artefacts found in the volcanic ash layers show that Aborigines were living in the area at the time of the eruption. The Warrnambool area was a rich source of foods for the Koroitgundidj people, whose descendants retain special links with this country. This photograph was *featured* in the Red Bubble groups 'Kanawinka Geopark Art' ' Wild Oz', and 'Country Victoria'. #volcanicstrata #landscapes