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.
For those of you who are not geologists, a tuff is a volcanic rock, made up of solidified ash. Hence the pun as my blog title. Actually, my research...
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