Port Valbury secret area

How to get there? I spent 30 minutes in game trying to find the path and then another 30 minutes googling.
Thanks for the help.

You have to break a pile of junk that blocks the way.

Jesus Christ, that junk pile was breakable all this time!
Kinda confused why it had no visual effect for mouse cursor. After reading your post I just used some AoE skill and it broke. Thank you very much.

That’s not the only area with a non-highlightable breakable barrier.