Got as many HPs as any other mob in the zone but they don't aggro and they give no xp. Is this for a quest?
I hailed one even though it was KoS and got [link=/db/quest.html?quest=10163]this interesting little quest[/link], the only way (so far) to improve Burynai Legion faction.
Edit: it actually was already mentioned in the [link=/db/npc.html?id=51575]Ancient Destroyer[/link] article since protecting 10 of these burynais spawns the Destroyer.