I just saw episode 11 of season 7 and was very disturbed by one of the scenes. At the end when all the Enterprises started popping into that universe, there was one which was commanded by a Riker with a long beard. The ship was heavily damaged and Riker was begging and screaming for help saying that the Borg were everywhere and that they were probably the only ship left. Is there any information on his universe?

The scene is disturbing because it makes you feel trapped and hopeless. I could feel their fear. I wanted to know if there's any information on that particular universe. It would be a very interesting and horrifying experience to learn more about it.