Tried numerous times, been caught both ends numerous times... the secca that guard the gates told us they were fully sealing every entrance, this was about a year ago, they never did what they told us, but the gates were replaced and the small squeeze under the gate filled in...
I think middleton exploring days are over, when did you take that photo? We have set the alarms off, they are hidden everywhere, under a rock and on top of a block building at the hopton end, its very loud as well!
"I got enough batteries to live down here indefinitely!"