Amazing Underwater canal, Cenote Angelita, Mexico.
Cenote Angelita, a vertical cave flooded. Below ground the debris, twigs, leaves the lot like a forest floor. And it also appears the groove resemble river like the smoke of steam covered over the grooves separated from the clean water over the top.
In fact, much of what is seen as a river below is hydrogen sulfide a toxic gas that is fatal if inhaled more. Which is caused by the deposition of rubble detritus decomposition.
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