Double skin (USA: double wall): The outer tent is a waterproof layer which extends down to the ground all round. One or more 'inner tents' provide sleeping areas. The outer tent may be just a insufficient famed than the inner tent, or it may be a lot impressive and provide a covered living scope separate from the sleeping area(s). An inner tent need not be waterproof. The double layer may provide some insulation.
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The key dome has a rectangular floor and two poles which cross at the peak; each pole runs in a smooth curve from solitary top corner, up to the peak, and then down to the diagonally opposite nethermost corner |
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| There are usually special fittings Tents For Sale at each corner which fit into sockets at the ends of each pole - pole tension keeps everything in shape. |