Frog Hollow Nature Reserve used to be a natural wetland along Eumemmerring Creek. In the past, it was full of trees, mostly River Red Gums. Many of these trees were cut down for fence posts and paving. Later, the land was cleared for grazing, leaving only small patches of plants along the creek for wildlife.
Today, parts of the reserve are managed by the City of Casey and Melbourne Water. Melbourne Water built ponds to clean storm water as part of their Healthy Bays program. These ponds also give homes to frogs, ducks, black swans, and other water birds. The ponds are man-made but work like the original wetlands.
Walking around the reserve takes about 40 minutes. Some paths are gravel, and others are concrete. There are signs to help visitors learn about the plants and animals. At the west end, a bridge leads to a trail under the freeway and a boardwalk along the wetlands.
