Sam Wilson called on the Skegness Standard for help after fearing the group may have lost his email address.
He said: “Whilst out walking with the dogs on a visit to the east coast, this group of people asked me to take their photo.
“I did so and they took my email so they could contact me for a copy. Unfortunately, the email never arrived and I would like to try to get the image to them.
“The only clues I have is they were in the area of Huttoft Bank on October 7 at 11.36am.”
If you recognise anyone in the picture, email [email protected]