The 3km Werrilyiup bush trail loops around Horse Swamp , a natural palusplain wetland that comes to life in the winter months, but is usually dry for the greater portion of the year. In the past when horses in the Swan Valley region went missing they were commonly found roaming in the lush pastures surrounding this wetland on the southern edge of what is now Whiteman Park. The area became known as Horse Swamp. Note the different spellings Werrilyiup and Werillyiup are both