Acidic waters in a cave can be very dangerous to spelunkers. The acid that the water contains can burn the skin severely.
I suppose that the acidic aquatic environments (including ocean waters) are more common and dangerous.
Dangerous Waters - 2012 was released on: USA: 2012
Dangerous Waters - 1919 was released on: USA: 21 September 1919
Dangerous Waters - 1923 was released on: USA: 6 January 1923
guna cave
Dangerous Waters - 1994 was released on: USA: 18 October 1994
Dangerous Waters - 1999 TV is rated/received certificates of: Argentina:13
very dangerous
haphazrd waters
Marble and limestone are commonly used to neutralize acidic mine waters due to their high calcium carbonate content, which can react with acidic water to buffer pH levels. Quartzite, slate, granite, and gneiss are not as effective for neutralizing acidic mine waters due to lower calcium carbonate content.
Body of Evidence - 2002 Dangerous Waters was released on: USA: 21 July 2005
Dangerous Waters - 2012 1-1 was released on: USA: 4 October 2012