On first appearances, the Rotor stump-grinder looks like an over-grown post-hole-borer.

Built in Italy, the pto-driven machine screws its way into stumps, chopping the wood and bringing it to the surface.

The chips can then be used as a mulch or composted.

Available for fitting to 360 diggers or a tractor linkage, a 1m wide borer requires 125hp and costs from 33,000 euros