Solway Firth is the narrow inlet of the sea that forms part of the border between England and Scotland between Cumbria and Dumfries. It is characteriszed by lowland hills and small mountains and it is mainly a rural area with small villages. 

It is mentioned in Recollections in the very beginning. "There is a pleasant view from the churchyard over Solway Firth to the Cumberland mountains. Dined at Annan. On our left as we travelled along appeared the Solway Firth and the mountains beyond, but the near country dreary. "