Firth is a village in the north east of Mainland, Shetland, Scotland, in the parish of Delting, not far from Mossbank. It is 27 miles from Lerwick. Along with a stone memorial at the entrance to the village, many abandoned croft houses still stand on the hill across Firth Voe from Mossbank. These commemorate the infamous "Delting Disaster" of 21 December 1900 …Firth is a village in the north east of Mainland, Shetland, Scotland, in the parish of Delting, not far from Mossbank. It is 27 miles from Lerwick. Along with a stone memorial at the entrance to the village, many abandoned croft houses still stand on the hill across Firth Voe from Mossbank. These commemorate the infamous "Delting Disaster" of 21 December 1900 when twenty-two local fishermen were lost during a storm, decimating the community.