Question: how to enter hyjal summit raid?
Answer: To go to Mt Hyjal, complete the call quest on the island right under the M in Stormwind on your map. Then fly a short distance over to Stormwind Keep to get teleported to Moonglade. Speak to Emissary Windsong to get As Hyjal Burns quest. Ride Aronus the dragon to Mount Hyjal.