The Gorgons had hair made of living, venomous snakes and whoever looked at their visage was turned into stone
They were sometimes represented by spirals, wheels, concentric circles, swastikas, firewheels.
I thought that a perfect contemporary metaphor would be to represent her hair with whirls of razor wire.
What can more effectively stop you on your journey and freeze you standstill like stone?
What is also more frightening than seeing it at night illuminated by searchlights?