We disturbed this spider when we moved a rock. It had a triangular web under the rock. Spider was 1-2cm long and moved pretty fast, hence the blurriness of the photo
Definitely not Badumna insignis Lynda, looks to me like you may have dug up a funnel web species. The smallest in your area would be Atrax sutherlandi but with that one pic I would not/could not ID with that.