I did most of my growing up in the Outre Hebrides, firstly on North Uist, then on Harris.
My father was the Divisional Road Surveyor. His beat was Harris down to Barra.
He spent a week every month 'down the islands' (North Uist, Benbecula, South Uist, Barra, Eriskay and Vatersay.) In the school holidays I went with him. I've flown from Benbecula to Barra.
Back in the day, there was no causeway to Vatersay, and that there is one now came about in a curious and tragic way. The Dept of Agriculture circulated good bulls round the Islands, to improve stock quality. Normally, the bull swam from Barra to Vatersay, but one unfortunate creature drowned. The causeway was built shortly afterwards. The sea right down the archipelago is shallow, hence the causeways between North Uist - Benbecula - South Uist.
There is talk of a causeway between Harris and North Uist. That would be fabulous, all the way from the Butt of Lewis down to the tip of South Uist.