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From there, it goes into a main drain pipe that flows into a natural valley. The closest natural valley to this is 350m away. To prevent back-flow, the main pipe is laid at an angle. A chamber is also provided, and with the pipe being 1m in diameter, it is convenient for people to walk into it and maintain it, and ensure it remains debris-free.

From there, it goes into a main drain pipe that flows into a natural valley. The closest natural valley to this is 350m away. To prevent back-flow, the main pipe is laid at an angle. A chamber is also provided, and with the pipe being 1m in diameter, it is convenient for people to walk into it and maintain it, and ensure it remains debris-free.

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