Laptop lost power during partition resize. Won't boot and files unaccessable

I was resizing the partition (enlarging) with gparted when about 2 minutes in there was a power cut. Now it won’t boot up and the filesystem is unaccessable.

I can see the partition in gparted but on attempting to do anything it gets stuck on “checking file system”.

“Disks” doesn’t even recognise the file system - it just shows free space where the file system should be.

When I click on the “173GB volume” in the launcher, it says “…structure needs cleaning”.

I’d appreciate if anyone can advise me how to get my data back. Please bear in mind I don’t have any USB drive large enough for copying the contents on the hard drive.

I’ve moved this to the category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the Finding Help page.