 Other additives were introduced in the mid-1900s as soil technology improved.In 1972, following demand for beachside blocks in the area, the townsite was gazetted.Myalup is on the southern edge of the Yalgorup National Park, a haven to native wildlife and bird sanctuary as well as a home to stromatolites – sedimentary rocks composed of layers of fossilised blue-green algae and one of the first lifeforms known to exist on earth.