Head to the Explorers' League Digsite in Southern Stranglethorn Vale.
Arrived at the Digsite
The other Darkspear emissary was here briefly. He was eager to get to the next location and warn them. I sent him on a flight to the Explorers' League Digsite in the Cape of Stranglethorn. I hope he wasn't too late.
I will give you use of one of my gryphons, a direct flight there.