Anembo Reserve is a large reserve directly adjacent to Ku-ring-gai Chase National Park that covers approximately 22 hectares, containing important habitat for a range of threatened and non-threatened native species, including one flora and four threatened fauna species identified within the reserve. Internal land uses include a horseriding exercise arena, a picnic area including BBQ seating and playground facilities. The area also includes a proportion of land surrounded by the reserve, used by the Bush Fire Brigade.
The Duffys Forest Residents Association (DFRA) aimed to give a major upgrade to the horse arena that was unmaintained, contaminated and had blackened sand. This would include putting down a new crushed sand stone base, new sandstone boundary and a perimeter fence. However, this was a very expensive job and required lots of funding. There was a big funding drive and finally after many generous donations, the DFRA finally had enough to start the project.