"Uncovering a Mysterious Magnetic Anomaly in Lake Rotorua, New Zealand"

Scientists have completed the first comprehensive mapping of New Zealand's Lake Rotorua, uncovering ancient features and a peculiar magnetic anomaly. The maps reveal thousands of pockmarks on the lake's floor, evidence of an ancient river, and magnetic anomalies that suggest the presence of another hydrothermal system beneath the lake. This mapping provides new insights into the lake's geological history and hydrothermal processes, shedding light on the violent volcanic activity that formed the lake 200,000 years ago.