| Scotland is divided into three main
regions; the Highlands, the Midland Valley and the Southern
Uplands. The cities of Edinburgh, Glasgow and Dundee together
with numerous towns, most of the population and the majority
of Scotland's industry is located within the Midland Valley.
This broad valley averages 50 miles across and runs WSW to ENE
across the centre of the country. It is geologically distinct
from the surrounding regions, being composed of Devonian Old
Red Sandstone, peppered with ancient volcanoes, as against the
older sedimentary rocks forming the Southern Uplands or the
ancient metamorphic melange, comprising the Highlands to the
north.
Scotland includes 787 islands, of
which most belong to groups known as the Hebrides, Orkney and
Shetland. Only 62 exceed three square miles in area.
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