(Kelly of the Clue Crew reports from inside Carlsbad Caverns Nat'l Park, New Mexico.)  The immense chambers in the cave at Carlsbad Cavern are the result of the aggressive dissolution of limestone by this acid, H2SO4
Although the limestone composition may buffer some aspects of acidic pre-... [DOC] [TLE] im alpinen karst: Topics by Science.gov [PAR] The convergent nature of flow in karst aquifers may result in contaminants .... 
Permian evaporites in southeastern New Mexico include gypsum, anhydrite, and 
salt, .... they are dissolved readily to form caves, sinkholes, disappearing streams, 
...... of epiphreatic conduits, interrupted by large collapse chambers and dolines.