I went to a primary school in rural Dorset, UK in the 1970s. Our playground equipment consisted of old tractor tyres, and large logs (cylindrical, "processed" l

I went to a primary school in rural Dorset, UK in the 1970s. Our playground equipment consisted of old tractor tyres, and large logs (cylindrical, "processed" logs). Someone would get in a tractor tyre, and the other kids would roll them down the playground, until they crashed into the wire fence at the bottom. :D We'd assemble the tyres and logs into "bases". It was such good fun, in lessons I remember counting the minutes until playtime, so we could get back to the "real business" of base building.