Hverfjall ash cone
Still within the Lake Myvatn region is Hverfjall a 1Km diameter ash cone and technically known as a Tuff ring, it is relatively low and smooth formed when a volcanic eruption rises to the surface through water.
Ref: EX414
Date: 30/08/1989
Location: Lake Myvatn, N Iceland
Photographer: Stafford Steed LRPS, CPAGB
