Void Field 1989 - purchased in 1990 using the Mervyn Horton Bequest Fund - is a very fine example of the 'New British Sculpture' Kapoor came to represent, along with Tony Cragg, Richard Deacon, Antony Gormley and others.
It initially appears as four deceptively simple blocks of Northumbrian sandstone. When you peer into the centre of each stone, there' s a deep velvety hole that seems, impossibly, to stretch to infinity.