A modern, sleek building with curved and linear elements surrounded by greenery, with trees in the foreground, architecture by MOXON Architects.
Wendover Green Tunnel

A landscape‑led response at the edge of the Chilterns

Wendover Green Tunnel

Buckinghamshire, England

2017 — ongoing

Clients:   HS2 Ltd, EKFB
Wendover Green Tunnel sits at a pivotal point in the HS2 route, where the line passes through the Wendover Gap at the edge of the Chilterns Area of Outstanding Natural Beauty. The design approach focuses on ensuring that this section of the railway is absorbed into the landscape with the greatest possible sensitivity, preserving the visual calm and rural character that define the Chilterns.
Construction site with large tunnel segments being assembled, heavy machinery operating, and vehicles on a dirt road, architecture by MOXON Architects

The tunnel is conceived as a landform intervention rather than a visible piece of infrastructure. By burying the railway beneath a sculpted landscape, the design maintains the continuity of the valley floor and protects long‑distance views across the AONB. 

The reinstated topography is shaped to blend seamlessly with the surrounding chalk landscape, while new planting reinforces existing woodland patterns and strengthens ecological connections across the gap.

High-speed train entering a tunnel, with a modern station and green landscape in the background, architecture by MOXON Architects.
A modern railway station with tracks, green spaces, and trees in autumn colors, designed by MOXON Architects, viewed from above.
A modern rail viaduct crossing a rural landscape with trees, open fields, and power lines, designed with sleek structures and greenery, architecture by MOXON Architects.

Wendover Green Tunnel also forms a carefully considered relationship with the nearby Small Dean Viaduct, another key structure on this stretch of the route. Together, the two projects establish a coherent architectural and landscape strategy: the tunnel quietly recessive, the viaduct slender and elevated, each responding to its immediate context while contributing to a unified experience of the wider landscape.

Construction site with large tunnel entrances, cranes, workers, and machinery on a dirt landscape, with power lines and vehicles in the background; architecture by MOXON Architects.

Developed in close collaboration with EKFB and design partners ASC, the project balances engineering requirements with the sensitivities of a nationally protected landscape. The result is an infrastructure intervention that is restrained, contextually attuned, and designed to minimise its presence within one of the most valued rural settings along the HS2 line.

Partners
Consultant
ASC
Structural Engineering
Arcadis
Structural Engineering
COWI

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