A picture of a couple, posing in bathing suits whilst standing at the foot of some cliffs, in what I assume is a seaside location. The style of the swimming costumes, particularly the woman's, suggest to me this is dated sometime in the mid to late 1950s, and some other pictures which seem to be the same location as this have clues which point to it being on the channel islands.
There is a distinct green tinge to this picture which I found impossible to remove at the time I scanned it. Several of the slides in this set had the same colour change, so it may be to do with the way the slides have been stored over the last 50 or so years.