As you know if you follow my blog I have an interest in the geology of the places I visit.so whilst on the beautiful island of Barra in the outer Hebrides I made a point of collecting a fine specimen of the Lewisian Gneiss which is one of the oldest rocks in Britain.On Barra the Gneiss is well glaciated or (smoothed over) by the ice age.But there are roadside quarries where you can chip away with a hammer(please wear protective goggles) and hopefully collect a decent fresh sample which represents this metamorphic rock in its true form. So here is an image of my pride and joy.
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