Gibbet Hill Middle Quarry - Aug-2003 Gibbet Hill Middle Quarry - Aug-2003 Gibbet Hill Middle Quarry Gibbet Hill Middle Quarry (also known as "Gibbet Hill Farm Quarry") is one of Coventry's two Regionally Important Geological Sites (RIGS) .  Note: I am not aware of what is of special interest - can anyone educate me please?