Secret nazi weapon research facitily discovered?

http://www.timesofisrael.com/nazis-vast-secret-wmd-facility-uncovered-in-austria/

Maybe...I'd want to see a lot more digging and research done before publishing headlines like this.  And I seriously doubt over 300,000 slave laborers died in its tunnels during its construction and use, like the article states.  That's absurd.  Nothing would get built/accomplished under those horrendous circumstances.