Nefertari nodded, her eyes filled with concern. "We should start by checking the Heart of the Island. If there's an imbalance, it might be the source."
They made their way to the hidden chamber where the Heart of the Island resided. As they approached the entrance, they could feel a faint vibration in the air. Inside, the crystal's light seemed dimmer, its usual vibrant glow now a subdued shimmer.
Mira knelt beside the crystal, placing her hands on its surface. "It's weaker," she said, her voice tinged with worry. "Something is draining its energy."
Dr. Hargrove, examining the surrounding crystals, added, "The tremor might have caused a disturbance in the island's magnetic fields. We need to stabilize the Heart before it loses more power."
Ethan, always pragmatic, suggested, "We should set up a monitoring system around the Heart. If we can track the energy fluctuations, we might pinpoint the source of the problem."
