In recent years, it seemed as if artists had broached all possible frontiers. They extended the plane surface of the canvas, took sculpture off its pedestal, used machines, made everything bigger and bigger. However large or awkward the object, museums and galleries managed to accommodate it.
For some artists, all this permissiveness seemed the reverse of a challenge. They declared that they found the wall, the floor, the room, the very idea of making an object, confining. So they have struck out for wilder shores of the imagination, for deserts and plains, mountaintops...