deep digs fact or fiction,,,,,,,,,,if you have worked terriers for a few years ,you would know the answer yourself.My deepest dig just over 16 ft,went back to car to get my camera came back five minutes later and the hole had collapsed in,,i was very lucky not to be killed.
On a different note it was in the days of the old clicker boxes,it could not pick up the dog at that depth, however i could hear the dog steadily baying with my ear to the ground.
at 16 feet deep who are yea superman
no superman..just someone with more exerience,did you know sound travels further in different types of so