So in the trailer a dragon goes through the ice. I havent seen this or even a dragon in the forgotten vale at all. Can anyone explain what the problem could be? Is this actually in the game?

There's a frozen lake area of the Vale, and you encounter these particular dragons in an area not crossed during your trek while on a particular mission.

It's in the game but you have to explore a little bit to find them.

Wow I feel dumb. I've explored everything but they aren't there. The problem is probably that I havent done the western watchtower quest for whiterrun that initiates the dragons in the game.

That very well might be it.

Yeah i've seen it, pretty cool stuff.

Lol, no wonder. Dragons going through the ice looks like a sight to see.

The going through the ice is leftover code from dragons in general.

Often ive seen regular dragons since day one of Skyrims release misjudge a dive and plow nose first in to the ground only to bounce back and fly skywads again (might have been the source of those dragons flying backwards bug reports a while ago).

Someone at Bethesda must have thought "If only there were a frozen icy lake there".

I've been swimming through the see near Solitude recently. Been freaking out everytime I do (most of the time its at night, and I can't see a thing underwater). Knowing that I don't have to worry about that actually is a downer.

Hmm. Maybe Bethesda might have a 'muahahaha!' moment and fix that. = P

*memorizes location of water dipping dragons*

actually thats meant to happen as in it takes heavy damage and it plows down but its glitched as well sometimes