The Serpentine River, which feeds the falls, has carved its path through rocks that are over 2.5 billion years old.
The park is home to a significant population of western grey kangaroos that have become accustomed to human presence in the picnic area.
The area contains remnant vegetation that acts as a vital corridor for species displaced by suburban development on the Swan Coastal Plain.
Water quality in the swimming basin is monitored periodically; the pool can be closed by authorities if high bacteria levels are detected.
Serpentine National Park is defined by the Serpentine Falls, a 15-meter waterfall that cascades over ancient granite rock formations into a deep swimming basin. Located within the Darling Scarp, the park features a diverse ecosystem of jarrah, marri, and wandoo forests. The primary attraction is a 400-meter walk trail leading from the main picnic area to the base of the waterfall. Wildlife is abundant, with western grey kangaroos frequently sighted in the open grassy areas near the parking lots. The park serves as a critical habitat for native fauna, including the endangered Carnaby's cockatoo. Bushwalking trails vary in intensity, ranging from easy strolls to more challenging hikes through rocky terrain. Picnic facilities include gas barbecues and shaded tables scattered throughout the valley floor. Swimming is permitted in the pool at the base of the falls, although the water remains cool year-round. The area is prone to park closures during periods of extreme fire danger or total fire bans.
The viewing platform overlooking the Serpentine Falls provides the clearest perspective of the water cascade and the surrounding granite gorge.
Arrive early in the morning, as the parking lot frequently reaches full capacity by mid-morning and the park will close to further entries.
Bring sturdy, closed-toe footwear for the rocky paths surrounding the falls area.
Carry sufficient water and sun protection, as the valley can become significantly hotter than the surrounding coastal plain.
Attempting to swim during periods of high rainfall when water levels and currents can become dangerous. Ignoring park capacity closures by attempting to park on the verge outside the main gate.
The park often reaches capacity quickly on weekends and public holidays, resulting in temporary closures. Always check for total fire bans before visiting, as the park closes completely during high-risk fire days.
Maintain a respectful distance from wildlife and do not feed the kangaroos. Use only designated gas barbecues; wood fires are prohibited.
