We have state parks here that are entirely fenced. You have to walk through the woods to see the fence, but they're fenced. It would just be easier to climb over the gate across the access road.

I imagine--I can only imagine because I've never been to Australia--that we're not talking about parks that take up an entire ecosystem, like some of the national parks you must have in Australia. (We have Yellowstone and Yosemite which aren't fenced.)

Back to climbing over the gate. Many of our state parks (Arkansas) are pretty big and remote, and if you drove your car to the gate, you'd still have a pretty good hike to get down to the river or lake or whatever the park is centered near. I have to say that Arkansas does a pretty good job with state parks. None of them charge admission, but some of them have been mothballed during times of economic downturn, to be reopened later.

Karen