<p><span style="font-size: 14pt;">Throughout the winter, this valley is mostly a park with a small lake, but when the warmth of spring comes the valley fills with the clearest of water to create a fleeting underwater kingdom and one of the great secret places in the world.</span></p>
<p><span style="font-size: 14pt;">The name "<strong>Green Lake</strong>" originated because of its emerald-green water. The clean and clear water comes from the snowmelt from the karst mountains and has a temperature of 6–7 °C (43–45 °F). During winter, the lake is only 1–2 m (3–7 ft) deep and the surrounding area is used as a county park.</span></p>
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