The Collyweston Quarries are a 6.6-hectare (16-acre) biological Site of Special Scientific Interest located near the village of Collyweston in Northamptonshire, England. They are known for producing the distinctive Collyweston stone slate, a traditional roofing material that has played a significant role in the region’s architectural heritage. In recent years, the quarries have evolved into vibrant ecological sites with a variety of flora and fauna.