Ancient Norse settlers discovered this natural underwater amphitheater and enhanced it with carefully placed runic stones, creating a natural warning system against sea monsters. Over centuries, the site became known as a reliable predictor of the Kraken's presence, as the beast's movement causes specific vibrations that resonate through the stone formation.

The formation consists of a series of hollowed sea caves lined with specially carved runestones that amplify and modify underwater vibrations. When the Kraken moves within several leagues, the caves produce a distinctive low-frequency hum that can be heard through ship hulls. The intensity and pitch of the sound vary based on the creature's proximity and direction.

Serves as a crucial early warning system for ships tracking the Kraken, while also providing Njord's Navigators with valuable data about the beast's movement patterns and preferred hunting grounds.