Before watching the movie:
I think of this movie as “Armageddon with Dirtronauts” (from a Dick van Dyke Show pitch). I really just know the log line, something’s wrong with the Earth’s core and we need to go fix it. Apparently it’s too dangerous to send robots to that kind of temperature and pressure so humans have to go instead.
It’s actually a fascinating idea to send an expedition below the crust, even if the conceit is ludicrous. At least Journey to the Center of the Earth is so divorced from science (I think even in Verne’s day the hollow Earth theory was at least on the way out) that it can be read as pure fantasy. With what we currently understand about the planet, no good can come from sending people that deep inside it, and the only sources of story there come from just how implausible such an expedition would be. So I’m going to try to enjoy this on its internal consistency, because the way it pretends to be science just preemptively frustrates me, but it otherwise looks like fun.