These are the rocks on top of which stands Llansteffan Castle in Carmarthenshire, South Wales, where my walk this week has taken place.

The weight of the rock is the first thing that impressed me, and the way they appeared to tumble onto the beach in front of me. It may be obvious that rocks have huge weight, but I find there are times when looking at natural objects like this, that the full extent of their nature strikes me with awe and I wonder at the unbelievable depth of time that has gone into forming the environment around me.

The colours and patterns to be found in this rocky edge to the beach are also amazing. Fortunately my companions on this walk seemed happy enough for me to lag behind from time to time in order to take my photos.