Carrick-a-Rede Rope Bridge is a famous rope bridge near Ballintoy in County Antrim, Northern Ireland. The bridge links the mainland to the tiny island of Carrickarede, meaning "rock of the casting". It spans 20 metres and is 30 metres above the rocks below. The bridge is mainly a tourist attraction and is owned and maintained by the National Trust. In 2009 it had 247,000 visitors. The bridge is open all year round, subject to weather, and people may cross it for a fee. It is thought salmon fishermen have been building bridges to the island for over 350 years. It has taken many forms over the years. In the 1970s it had only one handrail and large gaps between the slats. A new bridge, tested up to ten tonnes, was built with the help of local climbers and abseilers in 2000. Another was built in 2004 and offered visitors and fishermen alike a much safer passage to the island.
The current wire rope and Douglas fir bridge was made by Heyn Construction in Belfast and raised early in 2008 at a cost of over £16,000. Although no one has fallen off the bridge, there have been many instances where visitors, unable to face the walk back across the bridge, have had to be taken off the island by boat.It is no longer used by fishermen during the salmon season, which used to last from June until September, as there are now very few salmon left. In the 1960s, almost 300 fish were caught each day, but by 2002, only 300 were caught over the whole season. The salmon come through the area to spawn in the River Bann and the River Bush.The area is exceptional in natural beauty with stunning views of Rathlin Island and Scotland. The site and surrounding area is designated an Area of Special Scientific Interest for its unique geology, flora, and fauna. Underneath there are large caves, which once served as home for boat builders and as shelter during stormy weather.
Carrickarede island is the best example of a volcanic plug in Northern Ireland. Marine erosion has exposed a section through the neck of this old volcano. The presence of tuff, explosion breccias, grey volcanic ash and explosion bombs show the extreme violence of the eruptions about 60 million years ago when molten rock punched its way through chalk. Along the coast of this area, as with much of the Antrim plateau, the cliffs are of of basalt with the characteristic Ulster chalk underneath. At Carrickarede, the ancient volcanic pipe has left dolerite, a tougher rock than basalt, which erodes more slowly. Behind the dolerite, to the south, the vent is filled with pyroclastic rocks that break down more easily, mostly a coarse tuff agglomerate. The combination of the hard rock out front and the softer rock behind, with long term erosion by the waves, has eventually left this small island.
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