Mainland References Images Mainland island, Shetland Islands, Scotland, United Kingdom Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Shetland IslandsAmong the settlements on Mainland, the largest island, is Scalloway, a fishing port. Lerwick, also on Mainland, is the islands’ largest town and commercial and administrative centre. Read MoreAmong the settlements on Mainland, the largest island, is Scalloway, a fishing port. Lerwick, also on Mainland, is the islands’ largest town and commercial and administrative centre. Read More