It is probably a freeze plug in the block, most likely the back of the block. You cannot see it as the transaxle only allows about a 1/4 inch of space between it and the engine itself. But if you follow it (it'* easier when the engine is cold), you'll see it eventually flows down the crossover exhaust pipe and down to the ground.
Your best bet, without removal of the engine is to go to NAPA and pick up some Block Seal. You will need to be able to let the car sit for 24 hours also. So plan accordingly.
Essentially drain the cooling system. Once drained, refill with water and a can of this Block Seal. Run the motor until it fully warms, cooling system purges water is topped off, and it runs at normal operating temps. I'd let it run for 20 minutes or so, so that this Block Seal product can circulate thoroughly through the engine.
Drain this water/block seal out, letting the cooling system comepletely drain, and leave drainc-o-c-k open for at least 24 hours. This will allow the Block Seal to set up and do it'* job.
After 24 hours, refill with a mix of DexCool just like normal, purge, top-off, etc...
It'll probably be a good time to do hoses while you're doing the system flush.
The upper radiator hose may be a pain in the butt to locate as they aren't commonly stocked items.