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OFFICIALS WARN AGAINST EXPLORING THE CITY'S UNDERGROUND PASSAGES AS THEY, LIKE NATURAL CAVES, ARE SUSCEPTIBLE TO CHANGES IN WATER LEVELS, SURFACE VIBRATIONS AND STRUCTURAL INSTABILITY.
EVEN EXPERIENCED CAVERS WOULD WARN AGAINST CITY CAVING SINCE IT IS NOT ONLY DANGEROUS BUT HIGHLY ILLEGAL.
PERHAPS MORE IMPORTANT TO CONSIDER HOWEVER. IS HOW FRAGILE THE STRANGE BEAUTY AND THE LIVING HISTORY OF THESE TUNNELS ARE.