Yes, that's Deathwing looking into a cave. What's so special about that cave. It's owner and content.
It's part of the Badlands main chain quest, where we help a female goblin called Rhea with tests with Black Dragonflight eggs. Rhea ends up being a Red Dragon sent by Alex to find a uncorrupted black dragon egg. We end up purifying one egg.
That's right, a purified dragon flight egg, with the help of some Titan tech. After that, Rhea constantly on the move, which forces the Blacks attacking New Kargath. With the help of Rhea's mercenaries, a group of orcs bikers called Bad Dogs, we push the dragons back and she then goes to this cave to get the egg. Cutscene happens, she leaves something there, picks up the egg and then Deathwing appears and fries everything inside the cave.
Poor Rhea is dead, but it looks like it was a trick, the real egg stayed with the gnome that helped with the purifying process. Meaning, an uncorrupted Black dragon will born in the near future, under the protection of the Red Dragonflight.
EDIT: Bad Dogs, not Boys.