Tunnels

Downhill Railway Tunnel
This Railway tunnel runs through cliffs at Downhill, directly below Mussenden Temple. The tunnel, 275 metres in length, was blasted in 1846 and apparently attracted crowds of up to 12,000. Upon completion 500 people celebrated at a huge banquet held within the tunnel itself, an event that became known as the 'Great Blast'.
Today it is as good, taking regular trains through. What engineering and Endurance