Originally Posted by sjohnson
I used to do a lot of spelunking. Caves are cold, one of the most common cave rescues involves extracting a caver with hypothermia. So if you plan on using one better have plans for insulation and heat.
Maybe they're cold at the top.
As you go deeper, the temperatures get warmer (or colder, depending on the season outside) and stay the same temperature pretty much year round.