Lava tree mold

A lava tree mold is a special hollow shape made by lava around a tree trunk. It forms when hot lava flows through a forest and covers the trees. The lava cools to make a hard shell around the tree. Inside, the tree burns away, leaving an empty space.

These molds can look like tall, thin tubes if the tree stayed upright, or like fallen cylinders if the tree fell over. For a mold to form, the lava needs to move slowly so it can harden properly.

Scientists and visitors study these molds to learn about past volcanic eruptions and what forests looked like before the lava flow. They show how nature can create unusual shapes.

Methane explosions

When lava forms a tree mold, special gases can be made. As the tree burns inside the lava, its roots may heat up and let out gases like methane. If these gases find a place with air, such as a lava tube or crack, they can sometimes cause an explosion. This happens when the gas and air mix just right to catch fire.