Dulce is a supposed Airforce base in New Mexico, USA.
Refer to:
the Branton files: http://www.ivantic.net/Slike%20i%20kratki%20filmovi/Dulce_Book_-_Area_51_Underground.pdf
the Sanchez interview: http://lunaticoutpost.com/Topic-AMERICA-Dulce-AFB-Insider-Interview-COMPLETE-will-take-an-hour-or-two-to-read
the Schneider interviews: http://video.google.com/videoplay?docid=8180572860678943465