Analysis of information sources in references of the Wikipedia article "Waitomo Glowworm Cave" in English language version.
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[...] Mr H. J. Greenslade strongly urged the desirability of the Government taking over both the old and the newly-discovered caves at Waitomo, as unless something was done their marvellous beauty would be seriously impaired in consequence of the reprehensible practice that exists among visitors of disfiguring and removing stalactites.
[...] electric lanterns for the use of visitors should be substituted for candles [...] persons of vandal tendencies would be unable to disfigure the beautiful snow-white root's of the caves with their initials done in candle smoke. At the present time, one may see initials worked in this way in various places on the roof.
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