Gull Crag and the Rumble Churn - an outcrop of the igneous Whin Sill by munki-boy

Gull Crag and the Rumble Churn

A massive outcrop of the Whin Sill igneous intrustion on which stands Dunstanburgh Castle.

A Sill is the name for a geological process where a sheet of magma (molten rock below ground) is forced at high temperature and under massive pressure between pre-existing layers of rock strata. Think of a volcano but the molten rock went sideways (rather than exploding upwards) in the form of a horizontal sheet of many miles. These massive events happened here around 300 million years ago.

As igneous rock (in this case Dolerite) is generally much harder than the surrounding ‘country’ rock it is common to find massive igneous outcrops where the layers of softer rock have eroded away. As we can see here in the massive cliffs of Gull Crag, eroding much more slowly than the beach below.

The Rumble Churn is a small cove towards the end of Gull Crag, filled with churning water at the turn of the tide.

Gull Crag and the Rumble Churn is in Northumberland Coast AONB, a designated Area of Outstanding Natural Beauty.

Created: 8  March  2021  Edited: 29  November  2023

Gull Crag and the Rumble Churn

Secrets of Shaly Dingle

Brett Gregory is an award-winning filmmaker based in Bolton whose production company, Serious Feather, is currently making a documentary about autism and poetry.

As a part of this production, Landscape Britain was asked to advise with regards to the location of specific areas of outstanding natural beauty throughout the region.

Visit www.seriousfeather.com for further information.

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