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Tomhawkee t1_j284brb wrote on December 30, 2022 at 9:15 AM

Reply to comment by tripperfunster in How much does the liquid magma of the Earth affect it's surface temperature? by tripperfunster

Yes very, this is the exact premise of how Hobbit holes/underground buildings stay warm. Very little surface area exposed to the cold outer environment and the soil/ground work as a very thick layer of insulation.