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Q&A How can I estimate how far into a cave network breathing is possible?

I want two populations to coexist in a world with extensive tunnels carved into the rock. One population lives in the tunnels, coming out to trade and gather food. The other is aware of the tunnels...

2 answers  ·  posted 10y ago by trichoplax‭  ·  last activity 10y ago by trichoplax‭

Question physics caves