Hey everybody, I'm kinda reaching panic mode.

i have an external hard drive, with most of my media on it, and there is nothing wrong with anything on it, EXCEPT one folder. it used to work without a problem. just today, when i went to go to it, it was no longer a folder format, but an unreadable file format. when i try to open it, it asks which application i want to open it with? how did it change from a distinguishable folder into one file that can not be read by anything. i've searched google, and nothing. i tried to force it open with finder, and nothing. HELP! everyhting else on the hard drive is completely accessible. it also has a last modified date of dec 31st 1995.

any help would be amazing!