How to go to Teldrassil as Horde for the Elders of Kalimdor Achievement (Dragonflight)

I'll show you how you can get to Teldrassil as Horde in Dragonflight. Head on down to Darkshore and speak to Zidormi. Choose "Can you show me what Darkshore was like before the battle?" It will bring you to the past. Then just fly across to sea to Teldrassil and take the portal. Tada