Boiling mud at an active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific

An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific

Visitors to an active andesite stratovolcano on White Island, off the East side of North Island, New Zealand, Pacific

Mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific

Visitors watching mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific

An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific

Mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific

An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific

The caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific

Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand

Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific

An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific

Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific

Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific

Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific