There isn't really much geologically significant about this photo, other than that the castle is Made of stone.  However, I wanted to finish this week of photos instigated by Evelyn in Wales, and earlier today I was in Aberystwyth and I snapped this photo.

This week has been fun, looking through my photos has brought back quite a few memories.  I will get back to science soon, I have a post on Eyjafjallajörkull already lined up.