🌿 Hidden garden inside a giant sinkhole 👉 Created by James Umpherston back in 1888 when the cave roof collapsed, it is now a lush lawn ringed with hanging vines and flowers  👉 Short stair walk drops you to the floor while rim platforms give easy photo spots if stairs are not your thing  👉 Shade trees, picnic tables and a little café up top make lunch simple before or after the descent  👉 Visit again at dusk and watch the resident possums emerge among the ferns for a real wildlife bonus