The Åland Islands occupy a position of strategic importance, as they command one of the entrances to the port of Stockholm, as well as the approaches to the Gulf of Bothnia, in addition to being situated near the Gulf of Finland.
The Åland archipelago consists of nearly three hundred habitable islands, of which about eighty are inhabited; the remainder are merely some 6,000 skerries and desolate rocks. The archipelago is connected to Åboland archipelago in the east (Finnish: Turunmaan saaristo, Swedish: Åbolands skärgård) — the archipelago adjacent to the southwest coast of Finland. Together they form the Archipelago Sea. To West from Åland is Sea of Åland and to North the Bothnian Sea.
The surface of the islands is generally rocky and the soil, thin. There are several harbors.
The islands' landmass occupies a total area of 1,527 square kilometers (590 sq mi). Ninety per cent of the population live on Fasta Åland (the Main Island), which is also the site of the capital town of Mariehamn. Fasta Åland is the largest island in the archipelago, extending over 1,010 square kilometers, more than 66% of the province's land area. It measures approximately 47 kilometers (29 mi) from north to south and 34 kilometers (21 mi) from east to west.
During the Åland Crisis, the parties sought support from different maps of the islands. On the Swedish map, the most densely populated main island dominated, and many skerries were left out. On the Finnish map, a lot of smaller islands or skerries were, for technical reasons, given a slightly exaggerated size. The Swedish map made the islands appear to be closer to the mainland of Sweden than to Finland; the Finnish map stressed the continuity of the archipelago between the main island and mainland Finland, while a greater gap appeared between the islands and the archipelago on the Swedish side. Although both Finns and Swedes of course argued for their respective interpretations, in retrospect it
