This picture shows some strange objects I have recently seen in three places near my home 鈥� twice on verges of country roads and once near a stable鈥檚 muck heap. They are small spheres, between 2 and 4 centimetres in diameter, and very hard. They are nearly black inside, with terracotta-coloured skin. Each site had several hundred of the objects in a rough heap about a metre across. Have they been manufactured for a purpose? If so, why are they being dumped? Or are they natural? If so, what created them?
John Secker, Daresbury, Cheshire, UK
This article appeared in print under the headline 鈥淥dd jobs鈥�
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