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This trail , marked by orange triangles , forms a semicircle on the southern side of the 4WD track . As a water source the original settlers all staked their land claims around the lagoon which is noted for its birdlife , splendid colourful sunsets and a walking track around the lake . That year a station hand at ' Longerenong ' pegged out the first freehold block on the eastern side of the lake . The mining was never on a large-scale owing to the inaccessibility of the site and had ceased by 1906 due to the expense of transport . However , some 4WD tracks enter the park from the Murrayville area . The Murrayville-Nhill Rd actually follows the western boundary of Wyperfeld National Park for some distance and those with a 4WD will find a couple of tracks heading eastwards into the park ( the Milmed Rock Track and Chinaman Well Track ) . The old stables , blacksmith 's shop , shearing shed and original horse-drawn transport are still to be seen on the property . Whether they focus on financial , scientific , legal , medical , bibliographic , news , or other information , collections of information are essential tools for improving productivity , advancing education and training , and creating a more informed citizenry . On the right is the Tree Fern Walk ( 2 km ) which heads east along the creek before crossing a footbridge and meeting up with the Mountain Creek 4WD track . Old paddlesteamers and showboats ply the waters here , recalling the days before the railways when the inland river trade was a major means of intra-national transport . There is a very enjoyable walk around the lake ( 2 km ) which passes through a tunnel in the weir wall and there is a picnic-barbecue area with an information board outlining other bush walks . The lake contains rainbow , brown trout and the little-seen Macquarie perch . Thus a party of Germans arrived at the lake in 1871 . Follow the aforementioned 4WD track , which heads east from the picnic area , for 1 km to the ' Peppermint Walk ' signpost .