Hoi (Fossil Shell Beach)
The shell graveyard at Ban Laem Pho was once a
large freshwater swamp, home to a particular
variety of snail. During the Tertiary Age, that
is about 40 million years ago, these snails
lived and died by the million. The dead snails
formed a layer upon which existed the living.
Eventually, weather changes led to the
disappearance of the swamp, but left behind was
a layer of fossilised snail shells, about 40
centimetres thick, resting on 10 centimetres of
lignite, below which was subsoil. Due to
geographic upheaval, this shelly limestone is
now distributed in great broken sheets of
impressive magnitude on the seashore at Laem Pho.