Tate Modern reveals giant crack in civilisation

A huge crack - 548 ft long and three feet deep in places - in the concrete floor of Tate Modern has been unveiled

Made by Colombian artist Doris Salcedo and entitled Shibboleth,

"It represents borders, the experience of immigrants, the experience of segregation, the experience of racial hatred.

Salcedo and Tate staff at first refused to reveal how the crack was made

"What is important is the meaning of the piece, the making of it is not important," said the artist

How deep is it?

"It’s bottomless. It’s as deep as humanity," she replied as enigmatically as she could.

"I am worried about the building," exclaimed Stenake Aygh, the retired managing director of a Swedish building firm.

"To me, it clearly represents a tear in the fabric of society. It is nature at its most painful," said Robyn Menzel, a teacher visiting from Australia.

"But my husband would look at it and say its just a crack."