The upgrade includes the addition of eight tent campsites, four larger group campsites, a camp kitchen, two communal fire pits and two toilets.
‘For the first time, Yalgorup National Park will have specific sites for caravans and camper trailers, doubling the number of campsites to 34,’ Mr Jacob said.
The park contains the internationally recognised Peel-Yalgorup Ramsar-listed wetland, its migratory waterbirds and the Lake Clifton thrombolites.
Construction was funded from Royalties for Regions.
Martins Tank operates on a first come, first served basis and is best enjoyed from September to May.
In 2012-13, Yalgorup National Park received almost 360,000 visits. It is the largest national park on the Swan Coastal Plain stretching from south of Mandurah to Myalup.