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A comment on Gigantic heat caverns in Mustikkamaa have now been filled with water (2021). Parent comment

Re:Gigantic heat caverns in Mustikkamaa have now been filled... by alright2565 on Friday November 10, 2023 @12:21PM (#38221575)
They have a massive desalination and pipeline operation to create lakes throughout the country?

Or is it the the sun and rain that created the lakes?

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Re:Gigantic heat caverns in Mustikkamaa have now been filled... by toivotuo on Friday November 10, 2023 @12:42PM (#38221905)
https://www.geographyrealm.com/finland-many-lakes/

Thanks to the last ice age and retreating glaciers...

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Re:Gigantic heat caverns in Mustikkamaa have now been filled... by krisoft on Friday November 10, 2023 @01:09PM (#38222286)
Ice age and retreating glaciers created holes. And those holes filled up by the melt water of the glaciers.

The fact that they are still full of water is due to them being replenished by precipitation more than they lose water. If they would lose more water then what flows into them we would be speaking about the "land of many bone dry holes" in the famous Finnish desert.

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