THE ONLY MOONMILK RIVER IN THE WORLD
Gap Alzola is a natural cavity developed reef limestones and interbedded carbonaceous layers of lignite. artificial mine galleries were drilled last century to exploit the lignite . Currently the mine cave and form a network of tunnels that is crossed by an underground river . The cavity has a variety of speleothems of iron ore , calcite , quartz , illite , chamosita , plaster, brushite and amorphous compounds remain unidentified. Most notable is the presence of a white underground river, liquid milk moon, which is the first global report of this nature.
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