Uusimaa Rock Data Hall

A data hall excavated in granite beneath a pine forest in southern Finland, seventy-two metres below the forest floor.

The rock holds a steady temperature, and water drawn from a lake nearby carries the heat away, so the hall uses a fraction of the cooling energy of a building on the surface. Its waste heat warms the nearest town’s district heating network. A single glass portal in a rock cutting is all that shows above ground.

Images: Instinctual Group.