![Lake Toba occupies the caldera of a supervolcano (the largest in the world). Sumatra, Indonesia Stock Photo - Alamy Lake Toba occupies the caldera of a supervolcano (the largest in the world). Sumatra, Indonesia Stock Photo - Alamy](https://c8.alamy.com/comp/2H9126H/lake-toba-occupies-the-caldera-of-a-supervolcano-the-largest-in-the-world-sumatra-indonesia-2H9126H.jpg)
Lake Toba occupies the caldera of a supervolcano (the largest in the world). Sumatra, Indonesia Stock Photo - Alamy
![Lake Toba is a large natural lake in Sumatra, Indonesia occupying the caldera of a supervolcano. The lake is located in the middle of the northern part of the island of Sumatra, - Lake Toba is a large natural lake in Sumatra, Indonesia occupying the caldera of a supervolcano. The lake is located in the middle of the northern part of the island of Sumatra, -](https://media-cdn.tripadvisor.com/media/photo-s/1a/f0/95/85/lake-toba-is-a-large.jpg)
Lake Toba is a large natural lake in Sumatra, Indonesia occupying the caldera of a supervolcano. The lake is located in the middle of the northern part of the island of Sumatra, -
![Lake Toba occupies the caldera of a supervolcano (the largest in the world). Sumatra, Indonesia Stock Photo - Alamy Lake Toba occupies the caldera of a supervolcano (the largest in the world). Sumatra, Indonesia Stock Photo - Alamy](https://c8.alamy.com/comp/2H9127A/lake-toba-occupies-the-caldera-of-a-supervolcano-the-largest-in-the-world-sumatra-indonesia-2H9127A.jpg)
Lake Toba occupies the caldera of a supervolcano (the largest in the world). Sumatra, Indonesia Stock Photo - Alamy
![Toba supervolcano eruption signs need to be 're-evaluated', warn scientists | Science | News | Express.co.uk Toba supervolcano eruption signs need to be 're-evaluated', warn scientists | Science | News | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/151/590x/secondary/toba-eruption-4892575.jpg?r=1691163966277)