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Are you sure that's the seaside?Looks more like Archie the heffulump sploshing around in his paddling pool to me.
No fairies, just rock goblins chipping away when you aren't looking.In broad terms; Weak areas of rock on a headland are hammered by waves. (The weak areas are generally either faults, joint sets (in limestone) bedding planes or tension cracks)Eventually this forms a cave.If the weakness runs across the headland, eventually the cave will work its way all the way through to the other side (or 2 caves meet in the middle) thus forming an arch.If the weakness just runs back in land it will just form a deep cave or very occasionally a blow hole.The erosion will continue, until the arch collapses. If the rocks are right, this may leave a stack, or it may just all fall into the sea. Nice little vid explainign it...http://www.blip.tv/file/1324806/
hello neilep..how are ewe(haha)check out admirals arch on kangaroo island in south australia its a beauty..id post a link,but as you may have guessed im fairly newe to the hi tech world of computers..