A headframe is the construction at the top of a mine shaft containing the winding gear used to take men to the pit face and bring coal to the surface. The headframe you see here was constructed over the old one in 1963, which explains the height difference. Interestingly as a result Winterslag minefield boasts the oldest (1915) and youngest (1963) headframe in the Kempen basin. You can climb the youngest one... and it’s well worth it for the view!