I know that bored is used to describe how we feel, like I was bored at home. But is it correct to say: It is boring at the pond?
It can be, but the meaning is subtly different. "Bored" as you said, as a way that a person can feel. "Boring" is a condition or state of things which causes a person to be bored.
I was bored at home.
Simply describes how the speaker felt.
It is boring at my home.
Says that things are boring there, and that anyone would or might feel bored there. It at least pretends to a greater degree of objectivity.
Typically, boring is an adjective applied to a noun directly. Instead of saying
It is boring at the pond
a native speaker is likely to say
The pond is boring
By extension, people can be boring.
Don't invite Fred. He's boring.
Even great works of art, like opera and great literature, can be not to everyone's taste and so fall into this category:
You like opera? Dude, that's so boring!