New answers tagged forgotten-realms
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Climate Musings
There are a couple of sources I've found (here and here) that state that the temperature of a cave system on Earth will generally stabilize at the average surface temperature of the cave's opening.
Diving deeper, Earth has a geothermal gradient so that, "Away from tectonic plate boundaries, it is about 25–30 °C/km (72-87 °F/mi) of depth ...
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