Lake Jasper (Yoondaddup) Campground sits on the shore of Western Australia's largest freshwater lake, deep within D'Entrecasteaux National Park near Pemberton.

The lake is fed by underground water sources and nestled among vegetated dunes on the Scott Coastal Plain. A 4WD vehicle with high clearance is the only practical way to reach the campground, and bookings are essential.

The campground offers just three unpowered campsites on a sand surface, each with a private picnic table.

Facilities are minimal — drop toilets, a non-drinking water tank, and an outdoor basin are on site, so visitors must bring their own drinking water and pack out all rubbish. Campfires are not permitted at any time.

The lake itself is the main draw: calm, clear water ideal for swimming, canoeing, and kayaking, with a launch point near the picnic shelter.

Anglers can fish for freshwater cobbler, and birdwatchers will find the wetland system ranks among the southwest's most important waterbird habitats, with a chance of spotting the endangered little bittern. Power boats and water skiing are prohibited.