I used to live very near to Wincobank Hill and visited the site many times. It is clear that the banks of the hillfort were subjected to intense heat as vitrified stone is very easily found. Must have been some fire! Definately worth a visit. Superb views over Sheffield from here.
When all the world shall be aloft,
Then Hallam-shire shall be God's croft;
Winkabank and Temple-brough,
Will buy all England through and through.
Winkabank is a wood, upon a hill, near Sheffield, where there are some remains of an old camp. Temple-brough stands between the Rother and the Don, about a quarter of a mile from the place where these two rivers meet...
p235 of 'A Provincial Glossary' by Francis Grose (1811). Whatever it means.