The Khajiit of Elsweyr and the Bosmer of Valenwood had been fighting for several years, and now there was a lull in the fighting. Presumably, they were at peace. Merchant caravans and convoys started heading into Valenwood with much needed supplies, and materials. After several raids to test the strength of their enemy, the Khajiit invaded, burning the towns of Athay and Grenos. The survivors of the attacks fled to the sacred town known as Vindisi.
The refugees arrived near dusk, the Bosmeri official among them. The Khajiit had followed them through the forest without attracting any attention. So at midnight, the Khajiit attacked.
The Khajiit proceeded into the camp, and secured it, but finding no one proceeded towards the temple and the refugee camp. They slaughtered many refugees, and almost killed the Bosmeri official who had climbed a tree with a Daggerfall mage, a Nord, and an Imperial clerk. A Cathay-raht heard movement in the tree above him and started to climb it.
A flash of white fire erupted from every crevice of the temple, and the moan of the Bosmeri prayer changed into something terrible and otherworldly. The climbing Cathay-raht stopped and stared.
It was if a crack in reality had opened wide. A flood of horrific beasts, tentacled toads, insects of armor and spine, gelatinous serpents, vaporous beings with the face of the gods, all poured forth from the great hollow tree, blind with fury. They tore the Khajiiti in front of the temple to pieces. All the other cats fled for the jungle, but as they did so, they began pulling on the ropes they carried. In a few seconds, time the entire village of Vindisi was boiling with the lunatic apparitions of the Wild Hunt.
The Hunt's mass had grown and began to spill out through the pass into the valley, pursuing the fleeing Khajiiti. The Khajiiti gave one final tug on their ropes, and with a thunderous boom, an avalanche of boulders poured over the pass. When the dust cleared, it was seen that the valley had been sealed. The Wild Hunt had nowhere to turn, but on itself.
With the Wild Hunt trapped in Vindisi, the Khajiiti now had the opportunity and had no reason to fear an invasion into the farther depths of Valenwood.