Gabbro, barbed wire and vegetation

I like to bring a few bits of rock home from our trips. These are two bits of gabbro from the huge expanse of glacial till we trudged over on our walk just two days ago. The barbed wire is from the German IIWW gun emplacement at Brensholmen on Kvaloya island. The vegetation is from a large leaved willow and a ground-hugging plant that looks like a tiny fern and was growing on the glacial till in the harshest of conditions. 

I've put more photos on my Facebook page of the Northern Lights day