The water depth of Hallasan's Baengnokdam when full is insane ㄷㄷㄷㄷㄷㄷㄷㄷ

Baengnokdam Full Water Level Record
Kyunghyang Shinmun
Baengnokdam on Hallasan Mountain has reached its full water level. The Hallasan National Park Management Office announced on the 12th that Baengnokdam recorded a full water level as approximately 400mm of rain fell by the morning of the 12th, including 219mm of rain that fell in the Hallasan summit area on the 30th of last month. It is rare to see Baengnokdam filled to capacity during the spring season. The average freshwater surface area of Baengnokdam is 11,460㎡, but at maximum capacity, it presents a spectacular sight reaching up to 20,912㎡...
It could be over 4 meters deep ㄷㄷㄷㄷㄷ
It looks just like Cheonji (Heaven Lake)