Lava flows from Cumbre Vieja volcano on the Spanish island of La Palma have been ongoing for the seventh week, which began around Sept. 19. The volcano is now spewing what scientists call "lava bombs."

At the end of October, geochemist Harri Geiger visited Cumbre Vieja and captured a video of a large molten rock known as a "lava bomb. These molten rocks are rare and don't occur with every volcano. According to the USGS, molten rocks only develop during an explosive eruption.

The one Geiger found measures 3.2 feet across with an estimated weight of half a ton. Once ejected from the volcano, these projectiles can be extremely dangerous.

Harri Geiger @harrigeiger · Spallation lava bomb coming down from #LaPalmaVolcano on 27 Oct 2021.

#CumbreVieja

https://twitter.com/i/status/1453784459686318082

Harri Geiger @harrigeiger

Closer look at the lava bomb from #LaPalmaVolcano:

https://twitter.com/i/status/1453994514230743046

Over the last seven weeks, the island of La Palma has been devastated by the volcano. More than 2,600 building structures have been destroyed, and thousands of people have been evacuated.

Ash-fall measures in the feet across parts of the island.