But it marked the beginning of man's realisation that lighthouses could be built on the most inhospitable rocks.

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The kit will be fitted on rocks three kilometres from the main island of the Ecrehous and six kilometres from the main island of the Minquiers.

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The yoga might be done on windswept mid-ocean rocks (really), and the spa soaking in a vitality pool in a lush mangrove jungle.

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He was on the bridge when the HBOS ship hit the rocks, and was judged to be "unable or unwilling to change course".

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Nevertheless, the calculations show such rocks would be an extremely rare find on Earth.

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At the time of the incident, on 7 August 2010, the RNLI said 37 people had to be rescued from the boat when it hit rocks near Studland.

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