[Anthony Fremont]

Looks like you drew a circle around your blower motor. Insided the big black box is a thing much like a tiny radiator. It is your heater core and it is aparently leaking. If you don't need your heater, you can remove the hoses running to the black box, shorten them up if desired, and connect them together with a piece you can buy at pretty much any auto parts store. You can remove the whole assembly from the firewall then; it really cleans up the engine compartment. If you do need a heater, then you probably need a new heater core or to have yours repaired at a radiator shop.