Tropical Sea
Water formed the Peak District itself. About 350 million years ago Britain lay
on the Equator and the area that would one day become the Peak District was a
tropical sea. Dovedale and Manifold was a deep sea while further north, closer
to Buxton and Castleton, there was a shallow lagoon fringed with coral reefs and
palm trees. Particles of lime-mud along with dead coral and shellfish built up
on the sea bed so creating the White Peak limestone. The strange outcrops along
Winnat’s Pass are the remains of some coral reefs.
Underwater picture