Freo Today. 23 June 2023. The Cypress Hill, Rocky Bay area in North Fremantle is known as Waugal Mia, home of the Waugal or Rainbow Serpent. The Waugal is the snake-like creature responsible for the creation of waterways and landforms in Noongar boodjar and is central to belief, lore and custom. Local Whadjuk Noongar people know the cave as Garrangup. Jean Hudson took this lovely pic nearby where Waugal Mia meets the Derbarl Yerrigan.