[Newbie] Hose from crankcase to nowhere

Hello riders,
I am new to Polaris Forum (and to ATVs)

Under minimal research and curiosity, I was able to to get 2012 Sportsman Touring 500 HO. I was surprised how much premium 2UP takes (just to keep ex happy and yet she never tagged along).

ATV run fine, was clean so i simply happily took it on trails.
But on maintenance, i got stumbled a bit.

I changed oil (a bit unusual when comparing to cars) but I found loose hose that got me very worried. There is a hose by crankcase drain plug that goes to nowhere, and I fear that it may such in moisture or worse water into engine:

When removing seat I found that there is a broken connection so hose doesn’t connect to airbox (relatively obvious fix) but I noticed piece of aluminum foil covering port in carburetor.

I wonder if that’s where the house from under the has to go.

Lastly, obligatory picture of how my ride looks like: