Not so easy - or just reluctance
Most of my small collection of images are of obscure boulders in places never visited by cavers so I have put up an entrance and the answer is not " a tree ".
Mind you the tree might have fallen down the hole in more recent times.
Quote from: The Old Ruminator on April 22, 2017, 02:00:03 pmMind you the tree might have fallen down the hole in more recent times......or turned into a ship in defence from Napoleon?
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