Commonwealth Park located centrally in Canberra on the northern shore of Lake Burley Griffin is a lovely spot for a picnic, wedding, or just a stroll in the park. In spring this is the location for Floriade. There are also many other events held here at different times of the year. Other points of interest to be found here include: the National Capital Exhibition, the Picnic Shelter, Stage 88, the Rhododendron Gardens, Nerang Pool, the Marsh Gardens, the Amphitheatre, the Waterfalls, the Pergola, and the Rond Terraces. – The cache is located in the middle of the Marsh Gardens! As an added challenge, or if you want an excuse to wander around the park some more, you can search for the 6 large aluminium tetrahedrons specifically buried here in 1975. The container is fairly small so only small swaps will fit.