Its not been unknown for the wooden post to be pulled up from the post hole, leaving the fence just 1-2 feet high then walking across the post, then putting the post back in the post hole.
BTW there is a general rule that an area which is enclosed off will have at least one entrance called a gate.
![wink wink](/images/graemlins/default/wink.gif)
Cutting your way through/climbing over etc an obscure fence may mean you could be getting yourself into some serious trouble if crossing a secure area such as a FEMA camp, prison, nuclear or defense establishment. Sometimes it is just better to walk around the obstacle.
![wink wink](/images/graemlins/default/wink.gif)
Oh and keep an eye for electrical insulators on the fence, it could lead to a shocking experience.