Emerald green microbial pond

 

The green color of the geothermal pool is likely due to dissolved minerals and heat-loving microorganisms. High concentrations of sulphur, iron, and other mineral deposits in the water can give it a green hue. Additionally, thermophilic algae and bacteria, which thrive in the hot, mineral-rich environment, often produce pigments that contribute to the green coloration. The specific shade of green can vary depending on the mineral composition, acidity, and microbial activity within the pool.