I wonder if you might be willing and able to help me in my search for a short poem by R.S. Thomas that was read on the Radio 4 programme, Today, in the Autumn of last year. I have searched several volumes of Thomas's poetry but to no avail. Ditto after hours on the internet. I have thoroughly enjoyed broadening my exposure to his work but remain frustrated at my failure. I cannot remember any of the lines except that I believe it is about his wife, Mildred Eldridge, and alludes to her being a solid presence when alive - his anchor - and how that solidity faded away after her death. I seem to recall the allusion being to do with either snow or sand.
I would be hugely grateful if you can suggest which of R.S.'s poems this might be?