coolant leak on 2003 Mercury Mountaineer

my 2003 mounaineer is rapidly leaking antifreeze up near the firewall. this is the 2nd time it's happened. any ideas?

Asked by for the 2003 Mercury Mountaineer
1 answer
Is it a heater hose to the heater core? Or maybe the back of the intake manifold? Not sure...would have to see it.