There’s still snow on the upper slopes, look. I hear there are lots of glacial features to see here. CONNOR: Yes, like corries, like that one over there. A corrie is an armchair-shaped hollow ...

That’s Lairig Ghru. It was carved out by a glacier, a huge river of ice, during the ice age - just like corries and other glacial features. As glaciers move downhill under the force of gravity ...