Why is my HD showing low space?

My hd has started showing like 35gb free. It’s a 500gb Ssd, it has maybe 55gb on it. I ran a disk check and it says it’s fine. I can’t find anything using that much space.

Any ideas where to look?

Update

Ok. I feel like a complete idiot now…

Totally forgot about windows hiberfil. Even though I disabled hibernation windows did not delete that file. And since the machine has 384gb of ram. Yeah that would be a big file. If only I had enabled view system files as well as hidden files! I would have seen it right away!