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Description

SEE HOW WATER FILTERS THROUGH THE LAND, DANGER OF FLOODING AND STATEGIES FOR AVOIDANCE

Resources

2litre bottles per child, stones, sand (not builders sand - must be washed/clean sand), cotton wool

Instructions

See this other posting which has far better resources and information.

http://osmgr.in/a/3731

Tags

• outdoors
• water

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