One more possibility, not referring to future tense
sometimes, if you are asking something along the lines of: what's he likely to do in this situation?, the answer might well be "well, what do you think? He's probably hiding in a cave."
In this context, "Er wird sich (wohl) in einer Höhle verstecken" could refer to the present tense and mean "he's (probably) hiding in a cave".
HTH and doesn't confuse you further :-)
Local time: 18:32
Native speaker of: German, English
PRO pts in pair: 24