organisers say prospectors can keep under wraps .
lewis biggs , curator of folkestone triennial said : " there are 30 gold bars buried there , along with a lot of washers , so if you bring your metal detector you will find a lot of washers before you find any gold . "
michael sailstorfer has started at a beach in kent where a german artist buried £ 10,000 worth of bullion as part of an arts festival .
 
it is an artwork that has been shrouded in secrecy for obvious reasons : there are 30 gold bars worth a total of £ 10,000 buried on the beach in folkestone and once the tide is out at 4 pm on thursday it 's finders keepers .
nevertheless , each bar could be worth several hundred pounds and if you find one – it 's yours .
the bars are of different sizes and standard gold bullion marked made in london , although anyone expecting the kind of gold bars you see in heist films may be disappointed .
more than 150 people started digging for gold when low tide exposed the beach .
he said it was hoped people digging on the beach would create a work of art by making sand castles at the same time .