A few months ago someone emailed me with this information about this partially collapsed cob building which I had presumed to be only used as an agricultural store: 'The "unknown farm building with cob walls!" is called "Derwen Bedwen". It stands by the road between Cnwch-coch and Llanfihangel y creuddin, and was last lived in by a woman named "Marged Lizzie" untill the late sixty's. She had two or three nasty dogs that always chased us as we walked past on the way home from school!' If anyone has any further information on Marged Lizzie please do get in touch!