It's a small dark club / space under the S-Bahn near Jannowitzbrücke Station. It used to be illegal. Always really crowded, hot, dancy dancy....there are a lot of afterhours happening. Mainly electronic music.
Different program

also it is possible to rent the space (they actually have a good deal: split between bar and entrance and then they want to earn 500 euro with the bar which is possible if you have 100 People commin)

for more Details: contact Reimund (rei05@gmx.de) or
goldengate-berlin@gmx.de