did we ever get some clues as to why they went into hybernation?
There area few explainations:
1) Drakkar. in regards to the GW PC gamer mag, they talked about humans finding the dragon sleeping in the lake. they could suggest it was flash frozen or something.
OR!!! this one was on contrast to the drakkar one
2) the "water" dragon in the charr lands. in the mag again, in the caption, they explained that the an island grew around the dragon as it slept. grew AROUND it, this is to say it wasn't an instant case, but the dragon is literally sleeping there and the island formed around it.
so anyway, do we get an explaination as to why they were sleeping in the first place?