Capot
You could be right. It was the only Fort we visited and we called it Buraimi. Same as the strip which if I remember rightly was only a few minuteds drive from the fort. The photo was taken fifty years ago and has faded like my memory. I have extracted some clips from an 8mm movie I took at the time and the fort looks mud coloured. There were very few solid buildings and no hard roads so we called the whole area Buraimi. We didn't differentiate between the territories of the Trucial States and Muscat and Oman.
"Buraimi" airstrip
TOS soldier
Ruins at the back of the fort.