ATTENTION ALL SKYRIM PLAYERS, READ THIS POST
I've played Skyrim for 50+ hours, I've found tons of loot, fought all kinds of monsters, and been to nearly every corner of the country, so I'm feeling a bit arrogant. I've seen it all, the game just can't surprise me anymore. Dungeon variation is still nice and well-appreciated, but I've seen the different kinds. I'm feeling cocky. I was wrong.
While searching in the far north along the patch of frigid ocean near Winterhold, I found a ladder leading down to a hole in the ice, occupied by a madman. In exchange for helping him out, he agreed to find for me a particular item of great worth. I jumped at the opportunity for more questing, as is my want. He sent me to a dwarven ruin, jutting up from out a glacier. I found the sad remnants of a doomed band of adventures, having met their untimely end when the glacier closed around them. Madness took some, the Falmer took the rest. I ventured deep, past hordes of Falmer and the lifeless automatons of a dead civilization. I ventured very deep. Then I came at last to the end. The last two remaining members of the band of adventures appeared, arguing over whether to continue or to flee back to the surface in a conveniently-placed lift. Their argument came to blows, I killed both. The madman had told me to venture into depths of the world, and then go beyond even that. So I did.
At last I found it...Blackreach. My jaw hit the floor.
Two hours later, I'm still there.