lava

During a volcanic eruption, several hundred cubic meters of lava are usually ejected.

An excerpt from the article 14 facts about lava

These volumes can vary, sometimes being very large, such as during the eruption of the Laki rift volcano in southern Iceland, where the volume was 12 km3. Volcanoes in Iceland, known as the land of fire and ice, can spew lava at a rate of 75 tons per second.

In 1783, the Skaptar volcano exploded in Iceland, destroying crops and food supplies across the island. Iceland was hit by a wave of famine that killed one-fifth of the island's population.