This central volcano, decorating the landscapes of
the Breiddalur Valley and the vicinity of the Berufiord Bay, is
ancient and extinct. The British geologist George D. L. Walker
thoroughly researched this and other similar areas in the East. The
landscape is dotted with large and colourful rhyolite intrusions and
five prominent mountain peaks.
The southern slopes of the Breiddalur
Valley are especially colourful with very irregular strata and thick
layers of tephra. This central volcano stretches between Mt.
Fossarfjall to the south of the Berufiord Bay to the north to Mt.
Baejartindur. The western side stretches along the so-called
Ofaerunafir, but the eastern side has been eroded away.
middle of the volcano, the tremendous heat transformed the basaltic
rock and andesite and left it green in colour, making it very
difficult to distinguish between and the rhyolite. The row of mountain
peaks was created later, when the rhyolite intrusions took place and
created bulges in the landscape. This central volcano is considered
younger than the so-called Alftafiord-central volcano and the
East Iceland Saga Trail