I was looking around my engine compartment this morning and noticed a hose that doesn't hook up to anything on one end.

I looked through my Haynes manual but couldn't find a good picture of it there either. My hope is that someone here will be able to shed some light on WTF this thing is supposed to connect to.
This is a '74 2.0.
Sorry for the cell phone pics, hopefully clear enough to get the general idea. If not I can post high-res pics this evening.
Thanks in advance!
edit: This is a rubber hose.
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