AN £800,000 piece of public artwork commissioned by an art charity is to be unveiled at the Yorkshire Sculpture Park this month.

The Skyspace, by James Turrell, was commissioned by the National Art Collections Fund.

Mr Turrell, described as a `sculptor of light', created the work inside an 18th-century deer shelter at the West Bretton park.

A park spokeswoman said:

"The Skyspace's large, underground chamber has an aperture cut into the ceiling, open to the elements.

"The Skyspace baffles the senses by challenging everyday perceptions of the sky. It creates the illusion that the sky is within reach, brought down to the visitor seated inside."

James Turrell is best known for an ambitious project in the Arizona desert in which he spent more than 30 years transforming an extinct volcano into a series of skyspaces which harness the light from the Sun, Moon and stars.

An exhibition of his light installations is being held in the park's underground gallery. The Skyspace will open to the public on Friday next week.