What is this random pipe?

[Mattikuss]

Anyone know what this pipe might be installed for?

 

[IUsedToSail]

Waste discharge for draining the pool?

 

[Mattikuss]

Waste discharge for draining the pool?

Ahhhhh, got it. Yep, has to be what it is.

 

[pjt]

Anyone know what this pipe might be installed for?

Hard to tell from the zoomed in picture, but it appears to be between your pump and filter. If so, it gives you the ability to vacuum to waste (attach a hose to the barbed fitting) or quickly pump water out of your pool.