The instructions are: "Go into your photo archive, pick the 4th folder in the archive, select the 4th picture in the folder, and write about it. You then need to tag 4 other people to do the same."
Here's the image:

A temporary roof was built over the remains and in 1975, rebuilding work started. In 1984, the interior was restored including full restoration of the organ which has 113 stops, including three ranks of 32' pipes on the pedal division, and played by a 4-manual console.
In 1993, the church reopened in a grand ceremony which was televised all over Germany.
The Dom is well worth a visit when in Berlin. There is outside viewing just below the top of the high dome and the underground crypt filled with the remains of royalty and clergy is an amazing experience.
If anyone wants to do this tag, please do so, and link to it in our comments section!