RAYNET, Network Rail and Wiltshire Fire Service staff gather at Middlehill Yard for the pre-exercise track safety briefing. © GW7BSC 2006
The group, around 30 people, on their way to Box Tunnel from Middlehill Yard. © GW7BSC 2006
The Gwent RAYNET team with their radio station at the tunnel's West portal. © GW7BSC 2006
The "walking group"approaching the tunnel West Portal. © GW7BSC 2006
The North Wilts. RAYNET set-up at the tunnel East portal. © G4TIX 2006
The "walking group" emerge from the tunnel at the East portal. © G4TIX 2006
