Vulcan Point is a small islet rising from the lake that fills the main crater of Taal volcano in the Philippines. It is one of only two places on Earth where an island sits within a lake, on an island, in yet another lake. That sentence sounds like a riddle. It is not.
Access has been banned since 2020, and the ban is still in force. Taal produces recurring minor phreatomagmatic eruptions, and the Philippine Institute of Volcanology and Seismology (Phivolcs) keeps the entire island under constant watch.
Vulcan Point sits on Luzon, the largest island in the Philippines.
Luzon is home to Lake Taal.
From Lake Taal rises Volcano Island, where every recorded eruption in the system has occurred.
Volcano Island holds a second lake, formed in 1911 when a catastrophic eruption collapsed the floor of the main crater.
Inside that lake stands Vulcan Point, the remnant of an ancient volcanic cone that juts above the surface.
In geography, this kind of nesting is classified by order: an island inside a lake inside an island qualifies as a first-order island; each additional layer adds another level. Vulcan Point is a third-order example — one of only two documented on the planet.
Not the Largest of Its Kind
The obvious comparison is with Canada.
In 2007, geographer Josh Calder identified an unnamed island within a lake system on Victoria Island, Nunavut, while reviewing satellite imagery.
That island, roughly 4 acres in size, is larger than Vulcan Point and is now considered the largest third-order island on record. No one is known to have ever set foot there. The nearest inhabited place, Cambridge Bay, is nearly 93 miles away, with no roads connecting them.
A Small Volcano With an Outsized Caldera
Taal rises just 1,020 feet at its highest point, making it, by some accounts, the lowest active volcano in the world.
That figure belies the true scale of the system. The caldera containing the entire complex — lake, island, crater, and islet — measures between 15 and 19 miles across. It was formed by a series of eruptions thousands of years ago, the most violent of which reached a VEI 6 on the Volcanic Explosivity Index, comparable to the 1991 eruption of Pinatubo.
Volcano Island, the landmass that holds the crater, covers roughly 9 square miles and is composed of more than forty overlapping cones and craters.
A Lake That Was Saltwater Until 1754
Until the 18th century, Lake Taal was not a closed body of water. It connected to Balayan Bay through the Pansipit River, a navigable channel that boats regularly used.
The eruption of 1754 sealed that channel and cut the lake off from the sea. Over time, the water lost its salinity.
The marine species trapped inside adapted to their new freshwater surroundings, and that slow transformation produced two creatures found nowhere else on Earth: the tawilis (Sardinella tawilis), the only known freshwater sardine, and the sea snake Hydrophis semperi, one of only two sea snakes in the world that can live entirely in fresh water.
Both species are now at risk. The International Union for Conservation of Nature listed the tawilis as endangered in 2018, after its population fell by at least 50 percent over a single decade due to overfishing and pollution.
The snake was classified as vulnerable, threatened by declining water quality and by fishermen who kill it on sight, mistaking it for a dangerous snake.
A Volcano That Never Rests
Taal is the second most active volcano in the Philippines and one of the most closely monitored in the country. Its January 1911 eruption killed 1,334 people and carved the crater that now holds Vulcan Point.
In January 2020, a new eruption evaporated the crater lake entirely, leaving Vulcan Point surrounded not by water but by ash. Only in March of that year did rainfall restore it to an island.
The activity didn’t let up. During June 2026, Phivolcs recorded minor phreatomagmatic eruptions nearly every week, with columns of gas and ash rising between 980 and 7,870 feet, even as the alert level held at 1 on a scale of 0 to 5.
Phivolcs classifies Volcano Island as a Permanent Danger Zone and prohibits access to the island, navigation on the lake, and flights over the area. Despite the ban, some fish-cage caretakers still live there anyway.
The entire landscape — volcano, lake, islands, and unique species — has appeared on UNESCO’s World Heritage tentative list for years, though it has yet to undergo a formal evaluation.
For now, the only way to see Vulcan Point is through Phivolcs monitoring cameras and the satellite images that document each new eruption.
