Not a great deal, but I can find out more, as there are signs up near the house. Kind Regards, Patrick.

This Was the site of Australia's first zoo. And the favorite picnic spot of my mum and dad before they were married in the late 40's

Hi Bob, Thanks for the correction. You are right, that's why I took the pic to satisfy my son, we knew it as men in black HQ, I appologise for the incorrect naming of the actual tunnel.

Many Thanks, Pat.