Is Tonga’s ‘Shining Anus’ Volcano Poised for an Eruption Like Hunga Tonga’s Catastrophe?

On April 23, 2022, a vivid satellite snapshot of Tonga’s Tofua Island revealed smoke billowing from a volcanic cone called Lofia. Captured by the Landsat 9 satellite, the image is a powerful reminder that despite recent tranquility, Tofua remains a highly active and potentially hazardous volcano.

The Volcanic Landscape of Tofua Island

Located within the Ha’apai island group of Tonga, Tofua is renowned for its intense volcanic activity. At the island’s heart lies a vast caldera, formed through an ancient, explosive eruption millions of years ago.

This impressive caldera features steep cliffs reaching up to 515 meters (1,690 feet) above sea level, encompassing a deep crater lake at its center. Its stunning beauty belies the lingering risk of future eruptions.

NASA’s Earth Observatory highlights that Lofia, perched near the island’s summit, remains active and could erupt explosively again, similar to the widespread devastation seen in 2022.

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Volcanic History and Current Indicators

Tofua’s eruptive chronology dates back to at least 1774, with records indicating at least 12 eruptions. The most recent eruptive phase started in 2015, showing that volcanic activity has diminished but not ceased.

As noted by LiveScience, the Lofia cone persists as a significant volcanic hazard, making Tofua an island that demands continuous monitoring.

“There is always the possibility that Lofia could erupt with explosive power akin to Hunga Tonga-Hunga Ha’apai in 2022,” stated astronomers from NASA in October 2024, despite currently observing no signs of imminent eruption.

Tofua’s volcanic activity lacks the violent intensity of other nearby eruptions, but ongoing activity signals the potential for future explosive events.

shining-anus-volcano-erupt-8f928170d375e88414471bfb4e30d714.jpeg — A vast crater lake lies within Tofua’s dramatic caldera. Frequent emissions of smoke have been observed from the volcanic cone to the north of the lake during the activity phase commencing in 2015. (Photo credit: NASA/Landsat)

Mythology Behind Tofua's Shining Anus

Tofua is more than a geological marvel; it holds a prominent place in Tongan mythology. The island’s origin story involves a clash among gods.

Legend recounts how Tafakula, a deity of Tonga, thwarted three Samoan gods attempting to steal the island’s mountain. Tafakula revealed his shining anus, radiant enough to be mistaken for the rising sun, terrifying the Samoan gods into abandoning their attempt and dropping the mountain.

This legend enriches the cultural depth of Tofua and also explains the presence of nearby Kao Island.

Satellite Insights Into a Volcanic Enigma

The Landsat 9 satellite images provide an up-to-date look at Tofua’s volcanic behavior. The plume rising from Lofia’s cone is a vivid indicator of the island’s restless and unpredictable nature.

Though Tofua has experienced quieter periods, its active history coupled with ongoing emissions keeps it a critical focus for volcanologists and cultural historians.

The tale of the shining anus may seem unusual, but it symbolizes the formidable forces of nature entwined with the island’s rich traditions.