Green Lake, locally known as Ka Wai a Pele, may not be among Hawaii's most popular tourist destinations but it is one of the most scenic natural spots on the Big Island. Sitting in the center of a lush rainforest, the lake is actually a 400-year-old, freshwater-filled crater several hundred feet deep. It is the largest of only two fresh water lakes on the Big Island.
On June 2, 2018, the beautiful lake was wiped out after lava flowed into the area, filled the lake and evaporated all its water during Kilauea Volcano's eruptive episodes which started in May of the same year.
https://onlyinhawaii.org/green-lake-kapoho-hawaii/
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https://www.to-hawaii.com/big-island/cities/kapoho.php