Cape Naturaliste Lighthouse

Cape Naturaliste, in the south west of Western Australia, is the site of a lighthouse which was activated in 1904.[1]

Cape Naturaliste Lighthouse

Cape Naturaliste Light house
Western Australia
Location	Cape Naturaliste Western Australia Australia
Coordinates	33°32′14.4″S 115°01′07.3″E
Year first constructed	1904
Construction	limestone tower
Tower shape	cylindrical tower with balcony and lantern
Markings / pattern	white tower and lantern
Tower height	20 metres (66 ft)
Focal height	123 metres (404 ft)
Original lens	1st order Chance Brothers Fresnel lens
Intensity	930,000 cd
Range	25 nautical miles (46 km)
Characteristic	Fl W (2) 10s.
Admiralty number	K1790
NGA number	8880
ARLHS number	A US-040
Managing agent	Australian Maritime Safety Authority

It is a 20-metre (66 ft) high cylindrical tower built of limestone that still uses its original first order Fresnel lens made by Chance Brothers. The light characteristic is "Fl. (2) 10 s", i.e. a group of two flashes every ten seconds, the focal plane is at 123 metres (404 ft) above sea level. Another precious lens optic is displayed there, the second order Fresnel lens of the Jarman Island Light, as well as the original Great Sandy Islands beacon. Both items were originally used on the Pilbara coast further north.

The lighthouse was constructed of limestone quarried from nearby Bunker Bay, which was also known as the "Quarries".