It's not an official name as such but one that the locals refer to when describing them.

They are man made and put there in the early 1970s at the time of the creation of Gloucester Park's fishing lake.

The main hill, officially called 'Sharpeville' in 1985, but before then known as, and may still be referred to as, 'mud hill', was begun years earlier, created from spoil excavated from the new housing estates being built during the early years of the 'New Town'.