Artist and sculptor, Diane Maclean commissioned Birch Engineering (Cuffley) to produce ‘Mountain’, an 18m long, 6m high stainless steel outdoor sculpture.

The company built the structure at its Ware factory in Hertfordshire. It was constructed in double-skinned pairs of mirror-polished stainless steel panels. The piece features 11 vertical shafts designed to provide a walk-through canyon, and illuminated portholes with images of mineral structures. It also has a built-in audio facility