If you dig deep enough, temperatures should be much cooler than on / near the surface of the earth. (Unless the heat gets very intense. I don’t know enough to rule that out). How much digging that deep (as opposed to the depths we usually did to) would cost, though
The problem is the temperature of the earth rises fairly fast as you dig downwards. How fast depends on location, but always significantly enough that there’s a pretty hard limit on how cold you can go.
If you dig deep enough, temperatures should be much cooler than on / near the surface of the earth. (Unless the heat gets very intense. I don’t know enough to rule that out). How much digging that deep (as opposed to the depths we usually did to) would cost, though
The problem is the temperature of the earth rises fairly fast as you dig downwards. How fast depends on location, but always significantly enough that there’s a pretty hard limit on how cold you can go.