<p>West Somerset is an area of great geological diversity, straddling the Tees?Exe Line between highland and lowland Britain. The story of the last 400 million years of Earth history can be gleaned from its rocks: the opening and closing of oceans, the collision of continents and a journey across the Equator. The area may also provide the key to settle the controversy about the origin of South-West England, whose ancient geology is so different f...