The country's first energy park was opened in Milton Keynes in 1986.
It was split into two sections: Knowlhill for commercial development and Shenley Lodge for residential.
More information is available here
Although it was later removed, the exhibition also featured a wind turbine, until then an uncommon sight.
This concrete plinth is the foundation for MK's first wind turbine.
This is 1 of a set of 5 caches, the others are in Wolverton, Denbigh West, Middleton and Tongwell leading to a BONUS near Olney
PS. Don't forget the info for the Bonus