Something Opened?

So I just logged on, downloaded the updates blah blah and I saw a speech bubble from an NPC saying the plains of jarin is closed becuase the earthquakes have opened a crack and everyone must wait until the sunspears deem it safe, i spoke to him and he said they needed brave people to venture in and see whats happening, I got some heroes and we went, it was very dark and gloomy, I ran about a bit and saw something which looked out of palce, please correct me if im wrong but there is a massive crack with something glowing inside it! I have pics, here:
How to get there:

The crack itself:

It's the GW:EN sneak peek weekend stuff, this gets you in. I don't know too much about the Kamadan entrance, as I went through the LA entrance, but it should be the same essentially.

ahhhh, cool, i really should buy the preview pack :\