Thursday 25th April: meet at 14:00 by the War Memorial under the Castle for a walk of about 4km. NU 184 351
“Stuff your eyes with wonder, he said, live as if you'd drop dead in ten seconds. See the world. It's more fantastic than any dream made or paid for in factories.” (Ray Bradbury, Farenheit 451)
The temperature at which the Whin Sill was injected between the kilometre thick layers of Carboniferous sedimentary rock was over double that at which paper will combust, the Farenheit 451 of Ray Bradbury's distopian novel. At over 1000 degrees celcius the Whin Sill magma would have glowed a bright yellow, painfull to the eyes, albeit this would have been impossible to do as the molten rock remained trapped a kilometre or so underground.
This walk explores the rocks on this beautiful part of the coast which give the evidence for this story, showing what happens when hot magma and cold rock meet. The walk will also also help to explain the story of how the 300 million year old roots of Bamburgh Castle came to provide such a nicely defensible landform.
The walk is run as part of the Northumberland Coast AONB series of geo-diversity walks. Just turn up. A donation will be asked for to cover the costs of the walk, an amount of £10 is recommended, however Northumbrian Earth would like to make these walks accessible to all, so a donation will be asked of whatever you can afford and/or you think the walk is worth.