When Herla was to be married the dwarf king came to the wedding feast with his company and many generous gifts from the dwarf halls, and more than this, they see to all the provisions for Herla’s wedding and the care of his guests. After the wedding, as the dwarves were departing, Herla was invited to the wedding of the dwarf king exactly one year later.
Herla and his retinue set out for the wedding laden with gifts and passed through a doorway in the mountain into the dwarf realm and along a passageway lit by lamps.
The wedding ceremony lasted for what seemed like three days and when it was over, Herla prepared to depart. He was given many gifts to take with him including a hunting dog but told that no man should get down from his horse before the dog leapt to the ground.
After they came out of the entrance to the mountain the doorway seemed to melt away behind them and was no longer visible. They hailed an old shepherd to ask for news. But the old man cannot understand the Brittonic tongue, for he is a Saxon and it was his people that now inhabited this land.
Herla could not understand how things could have changed in just three days. Some of his men got down from their horses to question the shepherd more closely but crumbled into dust as their feet touched the ground. Herla remembered the dwarf king’s words and warned his remaining companions to stay in their saddles until the dog jumped down, but he has not yet done so and Herla and his companions have wandered the land like ghostly hunters ever since, waiting for the dog to jump.
According to Walter Map, who told this story in the twelfth century, Herla's band are said to have plunged into the River Wye during the first year of the reign of King Henry II (the year 1133), though others report that the Wild Hunt still rides.