Ghana is a lowland country, except
for a range of hills along the eastern border. The sandy coastline
is backed by a coastal plain that is crossed by several rivers
and streams generally navigable only by canoes. In the west the
train is broken by heavily forested hills which join to form
the Volta, which then flows south to the sea through a narrow
gap in the hills. Lake Volta, in the east is one of the largest
artificial lakes in the world. It was formed by the Akosombo
Dam, on the Volta River. No natural harbours exist. Ghana's highest
point, in the eastern hills, is about 900 m (2950 ft.) above
sea level.
