Inside the Winter Storm
Inside the Winter Storm is a Horde-only quest for level 10-45 in Stormheim. It rewards 1 reputation reward, 6,150 experience and money.
Description
There, it looks like there's a good spot to launch to right across from here. This path should take you all the way to the top.
According to my intel, your dragons should be up there. Let's just hope that they're still in a state to help you.